Question

For this problem you must state the null and alternative hypothesis, the critical value/s and/ or the rejection graph, the test statistic, a sentence describing your results, and the p-value of rejection.

6. The management of a Midwest chain designed an incentive plan for its salespersons. To evaluate this incentive program, 12 salespersons were randomly selected, and their weekly incomes before and after the plan were recorded:

Before: 320 290 421 510 210 402 645 560 360 431 506   485

After: 340 285 475 510 210 500 631 560   365    400   525   600

At 5% significance level is there a difference in the typical salesperson's weekly income due to the incentive program, when the population is normally distributed?

Answer 1

There is not sufficient evidence to conclude that there a difference in the typical salesperson's weekly income due to the incentive program