Chapter 11: Q. 6 (page 734)
The category that contributes the largest component to thestatistic is
(a) White.
(c) Hispanic.
(b) Black.
(d) Other.
(e) The answer cannot be determined since this is only a sample.
Short Answer
(c) Hispanic.
/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none}
Learning Materials
Features
Discover
Chapter 11: Q. 6 (page 734)
The category that contributes the largest component to thestatistic is
(a) White.
(c) Hispanic.
(b) Black.
(d) Other.
(e) The answer cannot be determined since this is only a sample.
(c) Hispanic.
All the tools & learning materials you need for study success - in one app.
Get started for free
The nonprofit group Public Agenda conducted telephone interviews with three randomly selected groups of parents of high school children. There were black parents, Hispanic parents, and white parents. One question asked was 鈥淎re the high schools in your state doing an excellent, good, fair, or poor job, or don鈥檛 you know enough to say?鈥 Here are the survey results:
(a) Calculate the conditional distribution (in proportions) of responses for each group of parents.
(b) Make an appropriate graph for comparing the conditional distributions in part (a).
(c) Write a few sentences comparing the distributions of responses for the three groups of parents

Yahtzee In the game of Yahtzee, six-sided dice are rolled simultaneously. To get a Yahtzee, the player must get the same number on all dice.
(a) Luis says that the probability of getting a Yahtzee in one roll of the dice is . Explain why Luis is wrong.
(b) Nassir decides to keep rolling all 5 dice until he gets a Yahtzee. He is surprised when he still hasn鈥檛 gotten a Yahtzee afterrolls. Should he be? Calculate an appropriate probability to support your answer .
Do men and women participate in sports for the same reasons? One goal for sports participants is social comparison鈥攖he desire to win or to do better than other people. Another is mastery鈥攖he desire to improve one鈥檚 skills or to try one鈥檚 best. A study on why students participate in sports collected data from independent random samples of male and female undergraduates at a large university. Each student was classified into one of four categories based on his or her responses to a questionnaire about sports goals. The four categories were high social comparison鈥 high mastery (HSC-HM), high social comparison鈥 low mastery (HSC-LM), low social comparison鈥揾igh mastery (LSC-HM), and low social comparison鈥搇ow mastery (LSC-LM). One purpose of the study was to compare the goals of male and female students. Here are the data displayed in a two-way table:
(a) Calculate the conditional distribution (in proportions) of the reported sports goals for each gender.
(b) Make an appropriate graph for comparing the conditional distributions in part (a).
(c) Write a few sentences comparing the distributions of sports goals for male and female undergraduates.
The conditions for carrying out the chi-square test in exercise T11.2 are
I. Separate random samples from the populations of interest.
II. Expected counts large enough.
III. The samples themselves and the individual observations in each sample are independent.
Which of the conditions is (are) satisfied in this case?
(a) I only
(d) Il and III only
(b) II only
(e) I, II, and III
(c) I and II only
Aspirin prevents blood from clotting and so helps prevent strokes. The Second European Stroke Prevention Study asked whether adding another anticlotting drug named dipyridamole would be more effective for patients who had already had a stroke. Here are the data on strokes during the two years of the study:

(a) Summarize these data in a two-way table.
(b) Make a graph to compare the rates of strokes for the four treatments. Describe what you see.
(c) Explain in words what the null hypothesis : p1 = p2 = p3 = p4 says about the incidence of strokes.
(d) Find the expected counts if H0 is true, and display them in a two-way table similar to the table of observed counts
What do you think about this solution?
We value your feedback to improve our textbook solutions.