An Employment information service claims the mean annual pay for full time male workers over age 25 without a high school diploma is $22,250. The annual pay for random sample of 10 full time male workers is over age 25 with out high school diploma is listed. At @= 0.10, test the claim that the mean salary is $22,250. Assume the population is normally distributed.
| 20,659 |
| 21,135 |
| 22,351 |
| 21,393 |
| 22,976 |
| 16,912 |
| 19,151 |
| 23,195 |
| 24,183 |
|
26,286 |
a) Identify H0 or Ha ?
b) What is (are) critical value(s), t0 ?
t 0 = (Use comma to separate answers as needed. Round to three decimal places as needed)
c) find the standardized test statistics
t =
d) Decided whether to reject or fail to reject the null hypothesis
