1. Among the most exciting aspects of a manager's life are departmental meetings where critical issues such as the color of the walls and who gets a new desk are decided. A sample of 20 managers were asked how many hours a year are spent on these meetings. Assuming that the variable is normally distributed with a standard deviation of 8 hours. Determine the trusted estimate of the average number of hours spent on departmental meeting of all managers. Use a 95% confidence level. Data: 14, 17, 3, 6, 17, 3, 8, 4, 20, 15, 7, 9, 0, 5, 11, 15, 18, 13, 8, 4
2. Determine the value of critical Z, statistical Z, show the rejection region, determine the p-value, interpret the result, and draw the distribution of the curve when = 6, n = 25, = 21.63, = .05, = 22, when the hypothesis is as follows: Alternate hypothesis: H1: < 22, Null hypothesis: H0: = 22
3. Determine the value of critical Z, statistical Z, display the rejection region, determine the p-value, interpret the result, and draw the curve distribution when = 2, n = 25, = 95, = .05 manually and with Mega-STAT or PSPP software to validate the result. Alternate hypothesis: H1: 100, Null hypothesis: H0: = 100