Daren S. Starnes, Daniel S. Yates, David S. Moore
ISBN #9781464154010
5th Edition
1,028 Questions
Homework Questions
The Practice of Statistics for AP is a comprehensive textbook that builds a strong foundation in statistical thinking by guiding students through the process of exploring data, modeling distributions, and describing relationships among quantitative variables. It covers a wide array of topics—from visual data representation and probability to designing studies, constructing confidence intervals, and conducting hypothesis tests—demonstrating how each concept interlinks to produce sound statistical inferences. With its emphasis on critical evaluation, rigorous testing procedures, and real-world applications, the book equips students with the analytical skills and methodologies essential for both academic success and practical data analysis.
Chapter 1
Exploring Data
Chapter 2
Modeling Distributions of Data
Chapter 3
Describing Relationships
Chapter 4
Designing Studies
Chapter 5
Probability: What Are the Chances?
Chapter 6
Random Variables
Chapter 7
Sampling Distributions
Chapter 8
Estimating with Confidence
Chapter 9
Testing a Claim
Chapter 10
Comparing Two Populations or Groups
Chapter 11
Inference for Distributions of Categorical Data
Chapter 12
More about Regression
Problem 1
Math test Josh just got the results of the statewide Algebra 2 test: his score is at the 60 th percentile. When Josh gets home, he tells his parents that he got 60 percent of the questions correct on the state test. Explain what's wrong with Josh's interpretation.
Donna Densmore Numerade Educator
Problem 2
Mammograms Many women choose to have annual mammograms to screen for breast cancer after age 40. A mammogram isn't foolproof. Sometimes the test suggests that a woman has breast cancer when she really doesn't (a "false positive"). Other times the test says that a woman doesn't have breast cancer when she actually does (a "false negative"). Suppose the false negative rate for a mammogram is $0.10 .$ (a) Interpret this probability as a long-nun relative frequency. (b) Which is a more serious error in this case: a false positive or a false negative? Justify your answer.
Lucas Finney Numerade Educator
Problem 3
Many people like to ride roller coasters. Amusement parks try to increase attendance by building exciting new coasters. The following table displays data on several roller coasters that were opened in a recent year. ${ }^{2}$ (a) What individuals does this data set describe? (b) What variables were measured? Identify each as categorical or quantitative. (c) Describe the individual in the highlighted row.
Sandra Kudolo Numerade Educator
Problem 4
Old folks Here is a stemplot of the percents of residents aged 65 and older in the 50 states: (a) Find and interpret the percentile for Colorado, where $10.1 \%$ of the residents are aged 65 and older. (b) Find and interpret the percentile for Rhode Island, where $13.9 \%$ of the residents are aged 65 and older. (c) Which of these two states is more unusual? Explain.
Bryan Meares Numerade Educator
Problem 5
An advertisement for an upcoming TV show asked: "Should handgun control be tougher? You call the shots in a special call-in poll tonight. If Charge is 50 cents for the first minute." Over $90 \%$ of people who called in said "Yes." Fxplain why this opinion poll is almost certainly biased.
Emily Himsel Numerade Educator
Problem 6
A high school's student newspaper plans to survey local businesses about the importance of students as customers. From an alphabetical list of all local businesses, the newspaper staff chooses 150 businesses at random. Of these, 73 return the questionnaire mailed by the staff. Identify the population and the sample.
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