Question: Jill Kindler, your top salesperson, claims that she averages more than 25 sales calls per day. From her daily log you randomly select a sample of 5 days with the following results:

Day 1 2 3 4 5

Calls 24 21 22 29 34

Use this data to test a skeptical null hypothesis that Ms. Kindler averages no more than 25 sales calls per day. Use a significance level of 10%. Assume that the population distribution of the number of sales calls made daily by Ms. Kindler is normal.

a) Show the null and alternative hypotheses.

b) State the appropriate decision rule for the test.

c) Compute the sample test statistic. t.

d) Should the null hypothesis be rejected? Explain.