College football is not just a game, but a multi-billion dollar industry that captivates fans across the nation. One of the most influential factors in determining a team’s success...The AP Top 25 Football rankings are a highly anticipated and closely watched weekly ranking of the top college football teams in the United States. This ranking is determined by a ...Jan 14, 2020 ... AP Stats Unit 5 - Sampling Distributions. Michael Porinchak · Playlist · 21:18 · Go to channel · Secret AP Statistics Exam Questions - Know&nb...If the occurrence of one event does not change the probability that the other event will happen. Events A and B are independent if P (AIB)=P (A) and P (BIA)=P (B) The multiplication rule for independent events. The probability that A and B both occur is P (A∩B)= P (A) times P (B) Study with Quizlet and memorize flashcards containing terms ...Unit Overview (Calendar) 01/29/2019. Sampling Distributions. WS #1. WS #1 KEY. 01/31/2019. Reese's Pieces Activity. Sample Proportions. WS #2.May 7, 2024 · The AP Statistics Exam will test your understanding of the mathematical concepts covered in the course units, including your ability to use statistical methods and calculate the probability of an outcome. You’ll need to bring a graphing calculator with statistics capabilities to the exam. Exam Duration. 3hrs. An FPO/APO address is an official address used to send mail to a person stationed overseas while serving in the United States military. FPO stands for Fleet Post Office. APO stands...For the “10 to 20 miles” distance category: The Florida region has the most damage (3.0 million dollars per acre) and so has rank 1. The region with the second-most damage is the Gulf Coast (1.7 million dollars), obtaining rank 2. The Lower Atlantic region has the least damage (0.3 million dollars) and so has rank 3.4.9 (56 reviews) A sociologist is studying the social media habits of high school students in a school district. The sociologist wants to estimate the average total number of minutes spent on social media per day in the population. A random sample of 50 high school students was selected, and they were asked, "How many minutes per day, on ...The AP Statistics Exam assesses student understanding of the skills and learning objectives outlined in the course framework. The exam is 3 hours long and includes 40 multiple-choice questions and 6 free-response questions. Section I: Multiple-choice | 40 Questions | 90 Minutes | 50% of Exam Score. All four skill categories are assessed.AP® Statistics Ultimate Review Packet. Buy $24.99 Teachers Free Preview. Fast and efficient! Everything you need to learn and practice for your introductory college or AP® statistics course and exams. Exclusive review videos with tips, strategies, and content. Study guides and practice sheets with answer keys for each unit.This is a quick video that covers sampling distributions for means and proportions.For more exclusive summary videos, study guides, practice sheets and much ...Unit 5: Sampling Distributions As you build understanding of sampling distributions, you’ll lay the foundation for estimating characteristics of a population and quantifying confidence. Topics may include:Updated 10:24 AM PDT, May 14, 2024. BALTIMORE (AP) — The 2024 Baltimore mayor’s race includes familiar faces and corruption allegations — two …150 Days of AP Stats - CED; 150 Days of AP Stats - Classic; Calc Medic; Math Medic; Assessments. Review Course. Workshops. Stats Medic APSO; Math Medic EFFL; …AP Statistics Free-Response Practice Test 2: One-Variable Data Analysis. AP Statistics Free-Response Practice Test 3: Two-Variable Data Analysis. AP Statistics Free-Response Practice Test 4: Two-Variable Data Analysis. AP Statistics Free-Response Practice Test 5: Design of a Study: Sampling, Surveys, and Experiments.AP Statistics Free-Response Practice Test 2: One-Variable Data Analysis. AP Statistics Free-Response Practice Test 3: Two-Variable Data Analysis. AP Statistics Free-Response Practice Test 4: Two-Variable Data Analysis. AP Statistics Free-Response Practice Test 5: Design of a Study: Sampling, Surveys, and Experiments.Answer. a) The sampling distribution for the difference in sample means represents the distribution of possible values for the difference between the sample means if the study were repeated many times. It is useful in this situation because it allows us to make inferences about the difference between the population means for the two genres … Try our AP Stats unit 5 test. These questions focus on sampling distributions, which are the distributions of a sample statistic (usually the sample mean or sample proportion), as well as distributions and probabilities relating to a single sample, usually using the Z-table. The Central Limit Theorem as well as some guidelines about using the ... For the “10 to 20 miles” distance category: The Florida region has the most damage (3.0 million dollars per acre) and so has rank 1. The region with the second-most damage is the Gulf Coast (1.7 million dollars), obtaining rank 2. The Lower Atlantic region has the least damage (0.3 million dollars) and so has rank 3.In today’s fast-paced business world, companies are constantly searching for ways to streamline processes and improve efficiency. One area that often requires significant attention...AP®︎/College Statistics. 14 units · 137 skills. Unit 1. Exploring categorical data. Unit 2. ... Unit 5. Exploring two-variable quantitative data. Unit 6 ...When it comes to baseball legends, few names stand out quite like Albert Pujols. With a career spanning over two decades, Pujols has left an indelible mark on the sport with his ex...AP Stats Unit 5 Part A MCQ. The distribution of heights for adult men in a certain population is approximately normal with mean 70 inches and standard deviation 4 inches. Which of the following represents the middle 80 percent of the heights?Answer. a) Since the sample of 100 households was selected using a random sampling method (i.e., SRS, stratified or cluster sampling), the sample is not biased as it is representative of the entire population and its characteristics. b) The sample mean income is an unbiased estimator of the population mean income if the sample was selected ...14 units · 137 skills. Unit 1. Exploring categorical data. Unit 2. Exploring one-variable quantitative data: Displaying and describing. ... Unit 14: Prepare for the 2022 AP®︎ Statistics Exam. About this unit. Check out some examples of worked free-response items from previous exams, and practice choosing an appropriate inference procedure ... AP Statistics Practice Exams Free Response Notes Videos Study Guides. All of the AP Statistics notes that we have listed below are fantastic. A great way to supplement your textbook and class notes, and also a great way to review the most important concepts for your exams. AP Statistics Unit 5 - Sampling Distributions Unit 5 Study Guide . Unit 5 Study Guide Answer Key. Unit 5 Summary Video. Topic 5.2 - Continuous Random Variables and ... AP ® Statistics 2022 Free-Response Questions . Begin your response to . QUESTION 1 . on this page. STATISTICS SECTION II . Total Time—1 hour and 30 minutes . 6 Questions . Part A Suggested Time—1 hour and 5 minutes 5 Questions . Directions: Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness AP Statistics – Chapter 5 Notes: Probability: What are the Chances? Page 2 of 3 The Basic Rules of Probability • For any event A, 0 ≤ P(A) ≤ 1. • If S is the sample space in a probability model, P(S) = 1. • In the case of equally likely outcomes, l of s e e of s dgo ( ) A P A • Complement rule: CP(A) = 1 – P(A)For more exclusive summary videos, study guides, practice sheets and much more to help you in your AP Stats class and on the AP Statistics exam check out the...Turns out getting to the patient is more expensive than curing them. The World Health Organization reportedly spent more money last year on traveling around the globe, than they di...AP Statistics Cram Unit 5: Sampling Distributions. slides by Josh Argo. AP Statistics Cram Unit 6: Inference for Categorical Data: Proportions Confidence Intervals.AP Statistics Unit 5: Sampling Distributions - Goldie's Math Emporium. Dec 9, 2022 | AP Statistics. *NEW AND UPDATED for 24/25* I’m so happy you found your way here!AP Statistics - Unit 5 (Probability) Test Review. Get a hint. Random Phenomenon. Click the card to flip 👆. A phenomenon is random if we know what outcomes could happen, but not which particular values will happen. Click the card to flip 👆. 1 / 95.Antiphospholipid syndrome (APS) is an autoimmune disorder that involves frequent blood clots (thromboses). When you have this condition, your body's immune system makes abnormal pr...Updated 10:24 AM PDT, May 14, 2024. BALTIMORE (AP) — The 2024 Baltimore mayor’s race includes familiar faces and corruption allegations — two …Why isn't the U.S. on the metric system? Learn about the reasons the United States has been slow to adopt the metric system. Advertisement Many myths swirl around the metric system... Advanced Placement Statistics, Periods 1, 2, & 7. Unit 5 Review Exercises. Unit 5 Review Answer key. The FRQ Unit 2 Exam Practice Prompt. Natural gas is used in many households to heat water, provide cooking fuel, and heat the home. January is typically a month in which many homes have their highest usage of natural gas. A utility company reviewed data from their customers in a certain city for a period of 15 years. AP Statistics Exam Info. Ms. Domino's DV AP Exams Info Sheet. Watch this interesting NOVA episode to see how what we are learning applies in the real world, and email me a paragraph stating at least 2 new things you learned from watching the video for extra credit: NOVA - Prediction by the Numbers. sampling distribution. the distribution of values taken by the statistic in all possible samples of the same size from the same population. unbiased estimator. the mean of its sampling distribution is equal to the true value of the parameter being estimated. variability of a statistic. the spread of its sampling distribution.Below is the notes for each unit of AP Statistics organized by AP Daily video. CED Unit 1: Exploring One-Variable Data. CED Unit 2: Exploring Two-Variable Data. CED Unit 3: Collecting Data. CED Unit 4: Probability, Random Variables, and Probability Distributions. A recent study reported that 1.5 percent of flights are canceled by major air carriers. Consider a simulation with 50 trials designed to estimate the number of canceled flights from a random sample of size 100, where the probability of success, a canceled flight, is 0.015.Of the following dotplots, which best represents the possible results ... Test your knowledge of AP Statistics Unit 5 – Sampling Distributions in Easy mode! Get immediate feedback and detailed explanations for every practice question. ... AP Statistics Practice Questions (MCQ): 📊 Unit 5 – Sampling Distributions: All topics. Browse more practice questions. Expand all categories. College Admissions. Arts.sampling distribution. the distribution of values taken by the statistic in all possible samples of the same size from the same population. unbiased estimator. the mean of its sampling distribution is equal to the true value of the parameter being estimated. variability of a statistic. the spread of its sampling distribution.Unit 3: Analyzing Data. 19 terms. talisajoby. Preview. stats test 1. 11 terms. lillygriffith011. ... AP Stat Exam reminders (Sampling Distributions and Confidence ...Jan 11, 2015 ... AP Stats Unit 7 - Inference for Quantitative Data: Means. Michael Porinchak ... AP Stats - Unit 5 - 7.1 - Intro to Sampling Distributions. Ms ... Identify the meaning of "Robust Procedures" in statistics. 2. Multiple Choice. Identify all graphs which help determine the shape of the distribution. 3. Multiple Choice. Identify the type of confidence interval described. Already have an account? AP Stat Unit 5 quiz for 9th grade students. Unit 3: Analyzing Data. 19 terms. talisajoby. Preview. stats test 1. 11 terms. lillygriffith011. ... AP Stat Exam reminders (Sampling Distributions and Confidence ...Notes 4 and 5. These two sections of notes formally define a sampling distribution for a sample mean and a sampling distribution for a difference in sample means. Right before you start Notes 4, you can choose to complete my new activity, “A Simulation of the Central Limit Theorem. The Central Limit Theorem (CLT) is an exciting idea in ...Which of the following statements must be true? 1: The mean of sample A is a point estimator for the mean of the population. 2: The mean of sample B is a point estimator for the mean of the population. 3: The mean of sample A is equal to the mean of sample B. 1 and 2. An online news source reports that the proportion of smartphone owners who ...Answer. a) The sampling distribution for the difference in sample means represents the distribution of possible values for the difference between the sample means if the study were repeated many times. It is useful in this situation because it allows us to make inferences about the difference between the population means for the two genres …This is a chapter review with examples of AP Stats for Chapter 5 of The Practice of Statistics: Probability: What are the Chances? This entire review just go...Is credit card ownership related to things like income, education level, or gender? We'll break down the relationship between these and more. We may be compensated when you click o...Turns out getting to the patient is more expensive than curing them. The World Health Organization reportedly spent more money last year on traveling around the globe, than they di...Displaying Quantitative Data with Graphs. S. streamed by Shane Durkan. Study guides & practice questions for 12 key topics in AP Stats Unit 4 – Probability, Random Variables, & Probability Distributions.For example, the AP Stats exam emphasizes Units 1, 3, 4, 6, and 7 more than Units 2, 5, 8, and 9. This is really important information if you have limited time. Here’s a short cheat sheet organized by unit to help you focus even more on those skills that will most likely be tested. We hope this helps, and will have one for Calculus up on ...Prepare your students for success with meticulously researched ELA, math, and science practice for grades 5-8. High School Replace your patchwork of digital curriculum and bring the world's most comprehensive practice resources to all subjects and grade levels.Here are the ideal stats for Clorinde in Genshin Impact: ATK: 2000+. CRIT Rate: 65-70%+. CRIT DMG: 150%+. Energy Recharge: 110-140% (Double Electro) Since you will be … If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at [email protected]. Download free-response questions from past AP Statistics exams, along with scoring guidelines, sample responses from exam takers, and scoring ... May 7, 2024 ... Ultimate Probability Review for AP Statistics to Score a 5 ... AP Statistics Unit 8 Chi Square Tests Summary Review Video ... AP Stats Last Minute ... Try our AP Stats unit 5 test. These questions focus on sampling distributions, which are the distributions of a sample statistic (usually the sample mean or sample proportion), as well as distributions and probabilities relating to a single sample, usually using the Z-table. The Central Limit Theorem as well as some guidelines about using the ... This video is a full review of all of Unit 1 Exploring One Variable Data for AP Statistics.For more full review videos, study guides, practice sheets and muc...Bored Apes Yacht Club maker Yuga Labs announced Friday that they have acquired the rights to the CryptoPunks and Meebits NFT collections from creator Larva Labs. Bored Apes and Cry...May 7, 2024 · Exam Format. The AP Statistics Exam has consistent question types, weighting, and scoring guidelines every year, so you and your students know what to expect on exam day. Section I: Multiple Choice. 40 Questions | 1 Hour 30 Minutes | 50% of Exam Score. Individual questions or sets of questions based on a shared prompt. Section II: Free Response. Exam Format. The AP Statistics Exam has consistent question types, weighting, and scoring guidelines every year, so you and your students know what to expect on exam day. Section I: Multiple Choice. 40 Questions | 1 Hour 30 Minutes | 50% of Exam Score. Individual questions or sets of questions based on a shared prompt. Section II: Free Response.Colleges are generally looking for a 4 or 5 on the AP Stats exam, but some may grant credit for a 3. Here’s how students scored on the May 2020 test: AP Statistics Score . Meaning . 2020 Percentage of Test Takers . 5. Extremely qualified. 16.2%. 4. Well qualified. 20.7%. 3. Qualified. 23.1%. 2. Possibly qualified. 21.7%. 1.This question covers content from Unit 1: ExploringOne-Variable Data and Unit 7: Inference for Quantitative Data: Means of the course framework in the AP Statistics Course and Exam Description. Refer to topics 1.6, 7.8, ... AP Statistics FRQ 5 Author: College Board Subject: AP; Advanced Placement; ADAWhy isn't the U.S. on the metric system? Learn about the reasons the United States has been slow to adopt the metric system. Advertisement Many myths swirl around the metric system...AP Statistics Exam Questions. Free-Response Questions and Scoring Information. Download free-response questions from this year's exam and past exams along with …In this special AP Daily video for Unit 5 of AP Statistics, you'll hear Senior Lecturer Ellen Breazel from Clemson University talk about common mistakes rega...AP Stats Unit 5 MCQ C. The mean age of the employees at a large corporation is 35.2 years, and the standard deviation is 9.5 years. A random sample of 4 employees will be selected. What are the mean and standard deviation of the sampling distribution of the sample mean for samples of size 4? A.) The mean is 35.2, and the standard deviation is 9.5.Free-response questions/solutions and multiple-choice solutions To access and submit answers to the progress check multiple-choice questions, log onto https://myap.collegeboard.org and go to AP Classroom.A random sample of 100 people will be selected from the population. What is the mean of the sampling distribution of the sample proportion of people with blue eyes for samples of size 100? A.)0.04 B.)0.17 C.)0.83 D.)3.76 E.)17.0, At a national convention attended by many educators, about 30 percent of the attendees are from the northeast. Of ...Try our AP Stats unit 5 test. These questions focus on sampling distributions, which are the distributions of a sample statistic (usually the sample mean or sample proportion), as well as distributions and probabilities relating to a single sample, usually using the Z-table. The Central Limit Theorem as well as some guidelines about using the ...AP Stats unit 5 Study guide. Get a hint. expected value. Click the card to flip 👆. mean of the discrete probability distribution. -weighted average where possible values of the variables are multiplied by their probabilities. -long-run average of number of successes we'd expect to get given a certain number of trials. Click the card to flip ...Displaying Quantitative Data with Graphs. S. streamed by Shane Durkan. Study guides & practice questions for 9 key topics in AP Stats Unit 2 – Exploring Two-Variable Data.n ≤ (1/10)N, allows for use of the standard deviation formula (since sampling without replacement, we need a large enough population to approximate independence)a distribution of statistics obtained by selecting all the possible samples of a specific size from a population. For a large enough sample size... the sampling distribution is approximately normal. Assumptions for sampling distribution. 1. independence: random sample + n less than 10 percent of population OR random assignment for treatment ...AP Statistics Unit 6 Progress Check: MCQ Part A. 12 terms. kkblonde. Preview. STAT 303 - Chapter 9. 30 terms. AidanConn. Preview. Behavioral Statistics Final Exam Key Terms. 136 terms. ... Statistics Unit 1/Chapter 1 Vocabulary Test. 38 terms. Giobutler. Preview. BUAL 2650 Exam 1 Review - Gupta. 37 terms. creaume. Preview. Stats. 29 terms ...AP Statistics Practice Test 5. Home / AP Test / AP Statistics Practice Tests. 10 questions. 23 minutes. See All test questions. 1. Fifty oranges of one variety were selected at random and weighed. A 95 percent confidence interval computed from the sample weights to estimate the mean weight of oranges of this variety is (7.58, 8.72) ounces.FRQ Practice Submission 2. a) The population is approximately normal, the value of n (40) is >= 30 by the Central Limit Theorem, and the sample shows no strong skew or outliers. The center of the sample mean is 210 seconds. The variability is 10.752 seconds because 68/sqrt (40) = 10.752.Dec 6, 2021 · AP Stats Unit 4 terms. 17 terms. TristanD27. Preview. ch 3 qba final . ... 7th Grade Bundle 5 - Statistics. Teacher 18 terms. MsAlyssaLittlejohn. Preview. Psych 10 ... AP®︎/College Statistics. 14 units · 137 skills. Unit 1. Exploring categorical data. Unit 2. Exploring one-variable quantitative data: Displaying and describing ... Exploring one-variable quantitative data: Percentiles, z-scores, and the normal distribution. Unit 5. Exploring two-variable quantitative data. Unit 6. Collecting data. Unit 7 ... AP Stat Unit 5 Progress Check: MCQ Part C. 12 terms. BreeStr8. Preview. Ap statistics Unit 7 Progress Check: MCQ Part B. 18 terms. peytonspinnn. Preview. Vocab UT 1 ... AP® Statistics 2005 Scoring Guidelines The College Board: Connecting Students to College Success ... Since the fuel consumption cost is $25 per unit, the average cost of fuel per mile will increase by approximately $25 2.15 …Is credit card ownership related to things like income, education level, or gender? We'll break down the relationship between these and more. We may be compensated when you click o...
AP Statistics. Chapter 5 Sampling Distributions. Unit 5-1: Unit 5-2: Unit 5-3: Unit 5-4: Unit 5-5: Unit 5-6: ... Unit 5-5 Sampling Distributions for Sample Proportions Outline. Calculate the conditional probability of two events, using a table, formula, tree diagram or Venn diagram when appropriate;. Smells like rotten eggs when i burp
Prepare your students for success with meticulously researched ELA, math, and science practice for grades 5-8. High School Replace your patchwork of digital curriculum and bring the world's most comprehensive practice resources to all subjects and grade levels. A recent study reported that 1.5 percent of flights are canceled by major air carriers. Consider a simulation with 50 trials designed to estimate the number of canceled flights from a random sample of size 100, where the probability of success, a canceled flight, is 0.015.Of the following dotplots, which best represents the possible results ... For example, the AP Stats exam emphasizes Units 1, 3, 4, 6, and 7 more than Units 2, 5, 8, and 9. This is really important information if you have limited time. Here’s a short cheat sheet organized by unit to help you focus even more on those skills that will most likely be tested. We hope this helps, and will have one for Calculus up on ...8. Continue your response to QUESTION 3 on this page. (b) Calculate and interpret the expected value for the number of gift cards a particular employee will receive in a 52-week year. Show your work. (c) Suppose that Agatha, an employee at the company, never receives a gift card for an entire 52-week year.The AP Daily videos are short 5 - 9 minute videos found in AP Classroom that cover all of the content in the AP Statistics course. The videos are presented by 8 AP Statistics teachers from around the country (including one Stats Medic!) Most often, the videos present content within some context, rather than simply stating formulas and definitions. AP Stat Unit 5 Progress Check: MCQ Part C. 12 terms. BreeStr8. Preview. Ap statistics Unit 7 Progress Check: MCQ Part B. 18 terms. peytonspinnn. Preview. Vocab UT 1 ... For Unit 5, students tend to perform poorly on questions that require interpreting the calculations rather than the formulas themselves. How to Self-Study for the AP Statistics Exam. If you plan to self-study for the AP Statistics exam without taking an AP course, you may have a few more obstacles and challenges ahead. However, it is definitely ...Bored Apes Yacht Club maker Yuga Labs announced Friday that they have acquired the rights to the CryptoPunks and Meebits NFT collections from creator Larva Labs. Bored Apes and Cry...Unit 1: Exploring One-Variable Data accounts for 15-23% of the AP® Statistics exam. Unit 4: Probability, Random Variables, and Probability Distributions account for 10-20% of the exam questions. L astly, Unit 3: Collecting Data and Unit 6: Inference for Categorical Data: Proportions both account for 12-15% of the exam.Mar 26, 2024 ... AP Statistics Unit 1 Full Summary Review Video ... Ultimate Probability Review for AP Statistics to Score a 5 ... AP stats test! Mostly Math with ...Unit 4 AP STATS. 21 terms. vanessag2024. Preview. Probability vocabulary. Teacher 29 terms. kgroffism. Preview. Stats. 10 terms. KatrinaKRamirez. Preview. Terms in this set (19) mutually exclusive. no outcomes in common and can never occur together. General Addition Rule. P(A or B)=P(A) + P(B)-P(A and B)AP Stats Unit 5 MCQ C. The mean age of the employees at a large corporation is 35.2 years, and the standard deviation is 9.5 years. A random sample of 4 employees will be selected. What are the mean and standard deviation of the sampling distribution of the sample mean for samples of size 4? A.) The mean is 35.2, and the standard deviation is 9.5.21 of 21. Quiz yourself with questions and answers for AP Statistics Unit 5 Test, so you can be ready for test day. Explore quizzes and practice tests created by teachers and students or create one from your course material.Proficient. Familiar. Attempted. Not started. Quiz. Unit test. About this unit. If you're curious about the mathematical ins and outs of probability, you've come to the right unit! Here, …Day 1: Lesson 5.1 - Randomness & Probability Day 2: Lesson 5.1 - Simulation Day 3: Lesson 5.2 - Probability Rules Day 4: Lesson 5.2 - General Addition Rule Day 5: Quiz 5.1-5.2 Day 6: Lesson 5.3 - Independent & Dependent Events Day 7: Lesson 5.3 - Conditional Probability & Tree Diagrams Day 8: Quiz 5.3 Day 9: Chapter 5 Review Day 10: Chapter 5 … AP Stat Unit 5 Progress Check: MCQ Part C. 12 terms. BreeStr8. Preview. Ap statistics Unit 7 Progress Check: MCQ Part B. 18 terms. peytonspinnn. Preview. Vocab UT 1 ... Try our AP Stats unit 5 test. These questions focus on sampling distributions, which are the distributions of a sample statistic (usually the sample mean or sample proportion), as well as distributions and probabilities relating to a single sample, usually using the Z-table. The Central Limit Theorem as well as some guidelines about using the ...If a random sample of 5 student-athletes is selected, what is the probability that 4 or 5 of the selected athletes are at least 16 years old? Writing Samples and Feedback Free Response Question Sample Submission 1. The probability that the student-athlete chosen from a random district is at least 16 years old is .767. (.211+.321+.151+.084ap stats unit 5 test. Get a hint. 95% interval z value. Click the card to flip 👆. 1.96. Click the card to flip 👆. 1 / 27. Try our AP Stats unit 5 test. These questions focus on sampling distributions, which are the distributions of a sample statistic (usually the sample mean or sample proportion), as well as distributions and probabilities relating to a single sample, usually using the Z-table. The Central Limit Theorem as well as some guidelines about using the ... .