Use the data in Exercise 6.23 to calculate the two-sided P value for a test of the null hypothesis that the population mean is 40,064—which is, in fact, the actual value of the population mean. If this experiment were to be repeated a large number of times, what percentage of the time would you expect the two-sided P value to be less than 0.05?

Exercise 6.23

The following data are the median ZIP-code incomes of the daughters of the random sample of 25 mothers in the preceding exercise. Calculate a 95 percent confidence interval for the population mean. Does your confidence interval include the actual value of the population mean, μ = 40,064?

Transcribed Image Text:

40,018 32,496 25,860 55,123 36,769 26,505 50,543 61,800 30,375 33,656 25,593 20,275 35,846 46,012 39,225 46,175 23,538 23,841 46,892 39,747 38,010 56,416 64,947 40,057 20,034