# Ap Stats Chapter 3 Homework Answers #1

AP Statistis Syllabus 2017-2018

Syllabus AP Statistics - Quarter 1 2017-2018.docx

Syllabus AP Statistics - Quarter 2 2017-2018.docx

Syllabus AP Statistics - Quarter 3 2018.docx

End of Marking Period 2 Assessment

Review - AP Statistics - End of Marking Period Assessment 2 2018 Part 1 ANSWERS.pdf

Review - AP Statistics - End of Marking Period Assessment 2 2018 Part 2 ANSWERS.pdf

What test do I use?

http://www.softschools.com/quizzes/math/ap_statistics_which_hypothesis_test/quiz8148.html

AP Test Review

AP Test Review - Chapter 1 ANSWERS.pdf

AP Test Review - Chapter 2 ANSWERS.pdf

AP Test Review - Chapter 3 ANSWERS.pdf

AP Test Review - Chapter 4 ANSWERS.pdf

AP Test Review - Chapter 5 ANSWERS.pdf

AP Test Review - Chapter 6 ANSWERS.pdf

AP Test Review - Chapter 7 ANSWERS.pdf

AP Test Review - Chapter 8 ANSWERS.pdf

AP Test Review - Chapter 9 ANSWERS.pdf

AP Test Review - Chapter 10 ANSWERS.pdf

AP Test Review - Chapter 11 ANSWERS.pdf

AP Test Review - Chapter 12 ANSWERS.pdf

Section 12.2 Transforming to Achieve Linearity

Homework - Section 12.2 Day 1 Pg. 785-786 #31 and 33 ANSWERS.pdf

Homework - Section 12.2 Day 2 Pg. 787-788 #35, 37, 39 ANSWERS.pdf

Homework - Section 12.2 Day 3 Pg. 788-791 #41, 43, 45 ANSWERS.pdf

Section 12.1 Inference for Linear Regression

Homework - Section 12.1 Day 1 Pg. 759 #1 and 3 ANSWERS.pdf

Homework - Section 12.1 Day 2 Pg. 760-761 #5, 7, 9, 11 ANSWERS.pdf

Homework - Section 12.1 Day 3 Pg. 761-762 #15 ANSWERS.pdf

Review - Chapter 11 Inference for Distribution of Categorical Data

Review - Chapter 11 ANSWERS.pdf

Cooperative - Section 11.1 ANSWERS.pdf

Section 11.2 - Inference for Two-Way Tables

Homework - Section 11.2 Day 1 Pg.724-726 #27, 29, 31, 33, 35, 37, 39 ANSWERS.pdf

Homework - Section 11.2 Day 2 Pg. 726-729 #41, 43, 45, 47 ANSWERS.pdf

Section 11.1 - Chi-Square Test for Goodness of Fit

Homework - Section 11.1 Day 1 Pg. 693 #1, 3, 5 ANSWERS.pdf

Homework - Section 11.1 Day 2 Pg. 693-695 #7, 9, 11, 15, 17 ANSWERS.pdf

Review - Chapter 10 Comparing Two Populations or Groups

Review - Chapter 10 ANSWERS.pdf

Section 10.2 - Comparing Two Means

Homework - Section 10.2 Day 1 Pg. 654-655 #31, 33, 35 ANSWERS.pdf

Homework - Section 10.2 Day 2 Pg. 655-656 #37 and 39 ANSWERS.pdf

Homework - Section 10.2 Day 3 Pg. 656-658 #43, 45, 47 ANSWERS.pdf

Section 10.1 - Comparing Two Proportions

Homework - Section 10.1 Day 1 Pg. 629 #1, 3 ANSWERS.pdf

Homework - Section 10.1 Day 2 Pg. 630 #5, 7, 9, 11 ANSWERS.pdf

Homework - Section 10.1 Day 3 Pg. 631 #13, 15, 17, 19 ANSWERS.pdf

Review - Chapter 9 Testing Claims

Review - Chapter 9 ANSWERS.pdf

Section 9.3 - Tests about a Population Mean

Homework - Section 9.3 Day 1 Pg. 596-597 #69, 73, 77, 79 ANSWERS.pdf

Homework - Section 9.3 Day 2 Pg. 598 #83, 85, 87, 89, 90, 91, 93 ANSWERS.pdf

Section 9.2 - Tests about a Population Proportion

Homework - Section 9.2 Day 1 Pg. 570-571 #31, 35, 39, 41 ANSWERS.pdf

Homework - Section 9.2 Day 2 Pg. 571-572 #43, 45, 47, 51 ANSWERS.pdf

Homework - Section 9.2 Day 3 Pg. 572-573 #53, 55, 57 ANSWERS.pdf

Review - Section 9.2 ANSWERS.pdf

Section 9.1 - Significance Tests: The Basics

Homework - Section 9.1 Day 1 Pg. 551-552 #1,3,5,7,9,11,15 ANSWERS.pdf

Homework - Section 9.1 Day 2 Pg. 552-553 #13,17,19,21,23 ANSWERS.pdf

Review - End of Marking Period 2 Assessment

Review - AP Statistics - End of Marking Period Assessment 2 2017 ANSWERS.pdf

Review - Chapter 8 Estimating with Confidence

Review - Chapter 8 ANSWERS.pdf

Section 8.3 - Estimating with a Population Mean

Homework - Section 8.3 Day 1 Pg. 527-530 #55,57,59 ANSWERS.pdf

Homework - Section 8.3 Day 2 Pg. 527-530 #61, 65, 69, 71, 73 ANSWERS.pdf

Review - Section 8.1 and 8.2

Review - Sections 8.1 and 8.2 2018 ANSWERS.pdf

Section 8.2 - Estimating a Population Proportion

Homework - Section 8.2 Day 1 Pg. 504-507 #31, 33, 35, 37 ANSWERS.pdf

Homework - Section 8.2 Day 2 Pg. 504-507 #39, 41, 43, 45, 47 ANSWERS.pdf

Section 8.1 - Confidence Intervals: The Basics

Homework - Section 8.1 Day 1 Pg. 489-492 #1, 3, 5, 7, 9 ANSWERS.pdf

Homework - Section 8.1 Day 2 Pg. 489-492 #10, 11, 13, 15, 17, 19 ANSWERS.pdf

Review - Chapter 7 Sampling Distributions

Review - Chapter 7 ANSWERS.pdf

Section 7.3 - Sample Means

Homework - Section 7.3 Day 1 Pg. 461-462 #49,51,53,55 ANSWERS.pdf

Homework - Section 7.3 Day 2 Pg. 462-463 #57,59,61,63 ANSWERS.pdf

Section 7.2 - Sample Proportions

Homework - Section 7.2 Pg. 447-448 # 27,29,33,35,37,39 ANSWERS.pdf

Section 7.1 - What Is A Sampling Distribution?

Homework - Section 7.1 Day 1 Pg. 436 #1,3,5 ANSWERS.pdf

Homework - Section 7.1 Day 2 Pg. 436 #7,9,11,13,15,17,19 ANSWERS.pdf

Review - Chapter 6 Random Variables

Review - Chapter 6 ANSWERS.pdf

Section 6.3 Binomial and Geometric Random Variables

Homework - Section 6.3 Day 1 Pg. 410-414 #69, 71, 73, 75, 77 ANSWERS.pdf

Homework - Section 6.3 Day 2 Pg. 410-414 #79, 81, 83, 85, 87, 89 ANSWERS.pdf

Homework - Section 6.3 Day 3 Pg. 410-414 #93, 95, 97, 99 ANSWERS.pdf

Worksheet - Section 6.3 2017 ANSWERS.pdf

Section 6.2 - Transforming and Combining Random Variables

Homework - Section 6.2 Day 1 Pg. 382-386 #35, 37, 39-41, 43, 45 ANSWERS.pdf

Homework - Section 6.2 Day 2 Pg. 382-386 #47, 49, 51, 53, 55, 57-59, 61 ANSWERS.pdf

Review - Section 6.1 and 6.2 ANSWERS.pdf

Section 6.1 - Discrete and Continuous Random Variables

Homework - Section 6.1 Day 1 Pg. 359-363 #1, 3, 7, 9, 11, 13 ANSWERS.pdf

Homework - Section 6.1 Day 2 Pg. 359-363 #14, 15, 17, 18, 21, 23, 25 ANSWERS.pdf

Review - Section 6.1 and 6.2 ANSWERS.pdf

Review - Chapter 5 Probability: What Are the Chances?

Review - Chapter 5 ANSWERS.pdf

Section 5.3 - Conditional Probability and Independence

Homework - Section 5.3 Day 1 Pg. 333-337 #63, 65, 67, 71, 73, 77, 79 ANSWERS.pdf

Homework - Section 5.3 Day 2 Pg. 332 Case Study ANSWERS.pdf

Section 5.2 - Probability Rules

Homework - Section 5.2 Day 1 Pg. 314-317 #39, 41, 43, 45, 47 ANSWERS.pd

Homework - Section 5.2 Day 2 Pg. 314-317 #49, 51, 53, 55 ANSWERS.pdf

Section 5.1 - Randomness, Probability, and Simulation

Homework - Section 5.1 Day 1 Pg. 300-304 # 1, 3, 7, 9, 11 ANSWERS.pdf

Homework - Section 5.1 Day 2 Pg. 300-304 #15, 17, 19, 23, 25 ANSWERS.pdf

Review - End of Marking Period 1 Assessment

Review - End of Marking Period 1 Assessment AP Statistics ANSWERS.pdf

Review - Chapter 3 Describing Relationships

Review - Chapter 3 ANSWERS.pdf

Section 3.2 - Least-Sqaures Regression

Homework - Section 3.2 Day 1 Pg. 192-199 #35, 37, 39, 41, 45 ANSWERS.pdf

Homework - Section 3.2 Day 2 Pg. 192-199 #43, 47, 49, 51 ANSWERS.pdf

Homework - Section 3.2 Day 3 Pg. 192-199 #48, 50, 55, 58 ANSWERS.pdf

Homework - Section 3.2 Day 4 Pg. 192-199 #59, 61, 63, 65, 69 and Data Exploration ANSWERS.pdf

Section 3.1 - Scatterplots and Correlation

Homework - Section 3.1 Day 1 and 2 - Pg. 158-164 # 1, 5, 7, 11, 13, 14-18, 21, Data Exploration ANSWERS.pdf

Review - Chapter 2 Modeling Distributions of Data

Review - Chapter 2 ANSWERS.pdf

Section 2.2 - Density Curves and Normal Distributions

Homework - Section 2.2 Day 1 Pg. 127-134 # 33, 35, 39, 41, 43, 45, 47 49, 51 ANSWERS.pdf

Homework - Section 2.2 Day 2 Pg. 127-134 # 53, 55, 57, 59 ANSWERS.pdf

Section 2.1 - Describing Location in a Distribution

Homework - Section 2.1 Day 1 Pg. 99-103 # 1, 3, 5, 9, 11, 13, 15 ANSWERS.pdf

Homework - Section 2.1 Day 2 Pg. 98 Data Exploration ANSWERS.pdf

Review - Chapter 1 Exploring Data

Review - Chapter 1 ANSWERS.pdf

Section 1.2 - Displaying Quantitative Data with Graphs

Homework - Section 1.2 Day 1 Pg. 40-48 # 37, 39, 41, 43, 45, 47 ANSWERS.pdf

Homework - Section 1.2 Day 2 Pg. 40-48 # 53, 55, 59, 60, 65 ANSWERS.pdf

Homework - Section 1.3 Day 2 Pg. 66-67 Data Exploration ANSWERS.pdf

Section 1.1 - Analyzing Categorical Data

Homework - Intro Chapter 1 Day 1 Pg. 6-7 # 1, 3, 5, 7, 8 ANSWERS.pdf

Homework - Section 1.1 Day 1 Pg. 20-24 # 11, 13, 15, 17 ANSWERS.pdf

Homework - Section 1.1 Day 2 Pg. 19 Data Exploration ANSWERS.pdf

Practice Test - Chapter 4 Designing Studies

Practice AP Stats Review Exam - Chapter 4 ANSWERS.pdf

Review - Chapter 4 Designing Studies

Homework - Chapter 4 Review Pg. 278-279 #1-10 ANSWERS.pdf

Section 4.3 - Using Studies Weisely

Homework - Section 4.3 Day 1 and 2 Pg. 273-275 # 97, 98, 99, 100 ANSWERS.pdf

Section 4.2 - Experiments

Homework - Section 4.2 Day 1 Pg. 258-265 # 45, 47, 49, 51, 53, 55 ANSWERS.pdf

Homework - Section 4.2 Day 2 Pg. 258-265 # 57, 59, 61, 63, 65 ANSWERS.pdf

Homework - Section 4.2 Day 3 Pg. 258-265 # 67, 69, 71, 73 ANSWERS.pdf

Homework - Section 4.2 Day 4 Pg. 258-265 # 75, 77, 79, 81, 85 ANSWERS.pdf

Section 4.1 - Samples and Surverys

Homework - Section 4.1 Day 1 Pg. 229-234 # 1, 3, 5, 7, 9, 11 ANSWERS.pdf

Homework - Section 4.1 Day 2 Pg. 229-234 # 13, 15, 17, 19, 21, 23, 35 ANSWERS.pdf

Homework - Section 4.1 Day 3 Pg. 229-234 # 27, 29, 31, 33, 35 ANSWERS.pdf

Crash Course AP Statistics Order Form

http://www.amazon.com/Statistics-Course-Online-Advanced-Placement/dp/0738608882

AP Stats Formulas Packet

Formulas - AP Statistics.pdf

62The Practice of Statistics for AP*, 4/e Chapter 3 Section 3.1 Check Your Understanding, page 144: 1. The explanatory variable is the number of cans of beer. The response variable is the blood alcohol level. 2. There are two explanatory variables: amount of debt and income. The response variable is stress caused by college debt. Check Your Understanding, page 149: 1. The relationship is positive. The longer the duration of the eruption, the longer the wait between eruptions is. One reason for this may be that if the geyser erupted for longer, it expended more energy and it will take longer to build up the energy needed to erupt again. 2. The form is roughly linear with two clusters. The clusters indicate that in general there are two types of eruptions, one shorter, the other somewhat longer. 3. The relationship is fairly strong. Two points define a line and in this case we could think of each cluster as a point, so the two clusters seem to define a line. 4. There are a few outliers around the clusters, but not many and not very distant from the main grouping of points. 5. The Starnes family needs to know how long the last eruption was in order to predict how long it will be until the next one. Check Your Understanding, page 154: 1. (a) The correlation is about 0.9. This indicates that there is a strong, positive linear relationship between the number of boats registered in Florida and the number of manatees killed. (b) The correlation is about 0.5. This indicates that there is a moderate, positive linear relationship between the number of named storms predicted and the actual number of named storms. (c) The correlation is about 0.3. This indicates that there is a weak, positive linear relationship between the healing rate of the two front limbs of the newts. (d) The correlation is about -0.1. This indicates that there is a weak, negative linear relationship between last year’s percent return and this year’s percent return in the stock market. 2. If we remove the outlier in this scatterplot, the correlation would decrease. This point has the effect of strengthening the observed linear relationship we see. Exercises, page 158: 3.1 Water temperature is the explanatory variable, and weight change (growth) is the response variable. Both are quantitative. 3.2 The explanatory variable is the type of treatment—removal of the breast or removal of only the tumor and nearby lymph nodes, followed by radiation, and survival time is the response variable. Type of treatment is a categorical variable, and survival time is a quantitative variable. 3.3 (a) A positive association between IQ and GPA means that students with higher IQs tend to have higher GPAs, and those with lower IQs generally have lower GPAs. The plot does show a positive association. (b) The form of the relationship is roughly linear, because a line through the scatterplot of points would provide a good summary. The positive association is moderately strong (with a few exceptions) because most of the points would be close to the line. (c) The lowest point on the plot is for a student with an IQ of about 103 and a GPA of about 0.4.

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