The police department in a small town is reviewing the number of traffic citations given for speeding by Officer Michaels and Officer Spencer for the last 5 months. At the .05 significance level, is there a difference in the mean number of citations given by the two officers? The data is as follows: Officer Michaels 30 22 25 19 26 Officer Spencer 26 19 20 15 19

a. Enter the letter corresponding to the correct null and alternate hypotheses. A. H₀: _d 0 H₁: _d < 0

B. H₀: _d 0 H₁: _d > 0

C. H₀: _d = 0 H₁: _d 0

b. What is the level of significance?

c. Which test statistic will be used, z or t?

d. Enter the letter corresponding to the correct decision rule? A. Reject H₀ if z < -2.33

B. Reject H₀ if z < -1.96 or z > 1.96

C. Reject H₀ if t < -2.776 or t > 2.776

e. Calculate the value of the test statistic. Round your answer to three decimal places.

f. Enter the letter corresponding to the correct decision regarding the null hypothesis. A. Reject H₀

B. Do not reject H₀

g. Enter the letter corresponding to the correct answer to the question asked in the problem.

A. Yes, there is a difference in the mean number of citations given by the two officers.

B. No, there is no difference in the mean number of citations given by the two officers.