Chapter 10, Question 10.27: Let nj=100, X,=50, n2=100 and X2=30 a. At the 0.05 level of significance, is there evidence of a significant difference between the two population proportions? b. Construct a 95% confidence interval estimate for the difference between the two population proportions. Chapter 10, Question 10.28: Let n,=100, X,=45, n2=50 and X2=25 a. At the 0.01 level of significance, is there evidence of a significant difference between the two population proportions? b. Construct a 99% confidence interval estimate for the difference between the two population proportions. Chapter 10, Question 10.29: An online survey asked 1,004 adults "If purchasing a used car made certain upgrades or features more affordable, what would be your preferred luxury upgrade?" The results indicated that 9% of males and 14% of females answered window tinting. The samples sizes of males were both 502 and 46 of 502 males and 71 of 502 females reported window tinting as their preferred luxury upgrade of choice a. Is there evidence of a difference between males and females in the proportion who said they prefer window tinting as a luxury upgrade at the 0.01 level of significance? Find the p-value in (a) and interpret its meaning. C. Construct and interpret a 99% confidence interval estimate for the difference between the proportion of males and females who said they prefer window tinting as a luxury upgrade. d. What are your answer to (a) through (c) if 60 males said they prefer window tinting as a luxury upgrade? Chapter 10, Question 10.36: Determine the upper-tail critical values of F in each of the following two- tail tests. a. a = 0.10, nj=16, nz=21 b. a = 0.05, n,=16, n2=21 c. a = 0.01, n, =16, n,=21 Chapter 10, Question 10.38: The following information is available for two samples selected from independent normally distributed populations: Population A: n, =25, $2, = 16 Population B: n2=25, $3 = 25 a. Which sample variance do you place in the numerator of FSTAT? b. What is the value of FSTAY? C. What is the upper-tail critical value for F if the level of significance is 0.05 and the alternative hypothesis is H: 62, not equal to ozz ? d. What is your statistical decision