Problem 50E

Humans are known to have a mean gestation period of 280 days (from last menstruation) with a standard deviation of about 9 days. A hospital wondered whether there was any evidence that their patients were at risk for giving birth prematurely. In a random sample of 70 women, the average gestation time was 274.3 days.

(a) Is the alternative hypothesis one- or two-sided?

(b) Test the null hypothesis at α = 0.05.

(c) What is the P-value of the test statistic?

Chapter 17 ~ Statement of Cash Flows As Robert Palmer’s lyrics in Simply Irresistible eloquently states, “there’s no telling where the money went.” And that’s the purpose of this chapter, to determine where the money came from and where it went.☺ The statement of cash flows reports the period’s: (1) cash receipts, (2) cash payments and (3) net change in cash resulting from (A) operating, (B) investing and (C) financing activities and listing the noncash activities. There are 4 points of interest unveiled by the statement of cash flows of which investors and creditors look at: 1. The entity’s ability to generate future cash flows: a. Better prediction of the amounts and timing than the accrual basis. 2. The entity’s ability to pay dividen