Victor conducted a similar survey among undergraduate students at the University of Michigan using a random sample of the same sample size from the study conducted at Cornell University and obtained the same sample proportion. The undergraduate student body at the University of Michigan is almost twice as large as the undergraduate student body at Cornell University. Victor is concerned that the computation of the margin of error for a confidence interval for the population proportion will be affected by the population size. Do you agree with Victor's concern? O Yes, because he needs to have a similar portion of the population in his sample. O Yes, because the confidence interval assumptions require a large population. O No, because the margin of error is not affected by the population size. O No, because the sample will be representative of the population.

What is meant by the sample space of an experiment?

What is an experiment?

A recent issue of the AARP Bulletin reported that the average weekly pay for a woman with a high school degree is $520 (AARP Bulletin, January-February, 2010). Suppose you would like to determine if the average weekly pay for all working women is significantly greater than that for women with a high school degree. Data providing the weekly pay for a sample of 50 working women are available in the file named WeeklyPay. These data are consistent with the findings reported in the AARP article. a) State the hypotheses that should be used to test whether the mean weekly pay for all women is significantly greater than the mean weekly pay for women with a high school degree. b) Use the data in the file named WeeklyPay to compute the sample mean, the test statistic, and the p-value. c) Use a = .05. What is your conclusion? d) Repeat the hypothesis test using the critical value approach.