# Independent simple random samples of 9 women from

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Independent simple random samples of 9 women from country A and 9 women from country Byielded the following heights (in inches).Country A Country B65.364.160.266.461.761.765.862.061.067.364.664.960.064.765.468.059.063.6The following 90% confidence interval was obtained for μ1-μ2, the difference between the meanheight of women in country A and the mean height of women in country B.-4.34 in.<μ1-μ2< -0.03 inWhat does the confidence interval suggest about the population means?34)A)The confidence interval includes only negative values which suggests that the mean height ofwomen from country A is greater than the mean height of women from country B.B)The confidence interval includes only negative values which suggests that the two populationmeans might be equal. There doesn't appear to be a significant difference between the meanheight of women from country A and the mean height of women from country B.C)The confidence interval includes only negative values which suggests that the mean height ofwomen from country A is smaller than the mean height of women from country B.D)The confidence interval includes 0 which suggests that the two population means might beequal. There doesn't appear to be a significant difference between the mean height of womenfrom country A and the mean height of women from country B.
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SHORT ANSWER.Write the word or phrase that best completes each statement or answers the question.Perform the indicated hypothesis test.Assume that the two samples are independent simple random samples selectedfrom normally distributed populations.Also assume that the population standard deviations are equal (Η1=Η2), so thatthe standard error of the difference between means is obtained by pooling the sample variances .35)A researcher was interested in comparing the amount of time spent watching television bywomen and by men. Independent simple random samples of 14 women and 17 men wereselected, and each person was asked how many hours he or she had watched televisionduring the previous week. The summary statistics are as follows.WomenMenx1=11.4 hrx2=16.8 hrs1=4.1 hrs2=4.7 hrn1=14n2=17Use a 0.05 significance level to test the claim that the mean amount of time spent watchingtelevision by women is smaller than the mean amount of time spent watching television bymen. Use the traditional method of hypothesis testing.35)36)A researcher was interested in comparing the GPAs of students at two different colleges.Independent simple random samples of 8 students from college A and 13 students fromcollege B yielded the following GPAs.College A College B3.73.82.83.23.24.03.03.03.62.53.92.62.73.84.03.62.53.62.83.93.4Use a 0.10 significance level to test the claim that the mean GPA of students at college A isequal to the mean GPA of students at college B. Use the traditional method of hypothesistesting.36)
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Term
Fall
Professor
Marcos Enriquez
Tags
Statistical hypothesis testing, researcher