[SOLVED] Refer to Exercise 11.52. a. Find

> Each year the director of the reading program in a school district administers a standard test of reading skills. Then the director compares the average score for his district with the national average. Figure 2.20 was presented to the school board in th

> We have given the relative frequencies for the null hypothesis of a chi-square goodness-of-fit test and the sample size. Decide whether Assumptions 1 and 2 for using that test are satisfied. Sample size: n = 100. Relative frequencies: 0.65, 0.30, 0.05.

> Labor Day was created by the U.S. labor movement over 100 years ago. It was subsequently adopted by most states as an official holiday. In a poll by Gallup, 1003 randomly selected adults were asked whether they approve of labor unions; 65% said yes. a. I

> In 2012, 15.9% of all U.S. families had incomes below the poverty level, as reported by the U.S. Census Bureau in American Community Survey. During that same year, of 400 randomly selected Wyoming families, 50 had incomes below the poverty level. At the

> P. Noakes et al. researched the effects of fatty acids found in oily fish on lowering the risk of allergic disease in the article “Increased Intake of Oily Fish in Pregnancy: Effects on Neonatal Immune Responses and on Clinical Outcomes in Infants at 6 M

> In 2010, shortly before that year’s midterm elections, when Americans were dissatisfied with government and the Tea Party movement was emerging as a political force, 58% of American adults thought that a third major party was needed. In a recent Gallup p

> A poll conducted by Gallup asked American adults about vegetarianism. This problem is based on that poll. Of independent random samples of 500 men and 512 women, 20 of the men and 36 of the women said they were vegetarians. At the 5% significance level d

> The Arizona Republic conducted a telephone poll of 758 Arizona adults who celebrate Christmas. The question asked was, “In your family, do you open presents on Christmas Eve or Christmas Day?” Of those surveyed, 394 said they wait until Christmas Day. a.

> Scoliosis is a condition involving curvature of the spine. In a study by A. Nachemson and L. Peterson, reported in the Journal of Bone and Joint Surgery (Vol. 77, Issue 6, pp. 815–822), 286 girls aged 10 to 15 years were followed to determine the effects

> Gallup conducted a national survey of 1008 American adults, asking “As you may know, as part of its efforts to investigate terrorism, a federal government agency obtained records from larger U.S. telephone and Internet companies in order to compile telep

> The Quinnipiac University Poll conducts nationwide surveys as a public service and for research. This problem is based on the results of one such poll that asked independent random samples of American adults in urban, suburban, and rural regions, “Do you

> The Times Higher Education “World University Rankings” presents global university performance tables to judge world class universities on the basis of teaching, research, knowledge transfer, and international outlook. The rankings employ 13 carefully cal