For Exercises 21–22, perform the indicated hypothesis test using the pooled variance method. The summary statistics were taken from random samples that were drawn independently. Assume .
21. Test, at level of significance , whether > .
| Sample 1 | |||
| Sample 2 |
10.2.21
. . Reject if . . . Since is not ≥ 1.294, we do not reject . There is insufficient evidence at the level of significance that the population mean of Population 1 is greater than the population mean of Population 2.