Answers to review for Ch 19 through 20

1. Answers to Review WS (2-5) P. 503 #10 Review for Ch 19 & 20 TEST

3. WS #3 Notes: Always round up when reporting n. In this problem we had some idea what p should be. Many times we do not. If we don’t know then use 0.5 for p.

4. WS #4 Fail to reject the null since p-value is greater than alpha = .05. There is no evidence to suggest that the proportion of freshmen placed on academic probabation is less than 45%. p is proportion of freshmen placed on academic probation. Assumptions are all met – be sure to write formulas and plug in values to check. Be sure to write formula!