A business recently added a policy that allows their customer service operators to take a paid 30-minute "power nap" during the middle of the day if they feel fatigued. The hope is to reduce customer complaints. 10 randomly selected operators were selected and the number of complaints they received in the six months prior to the new policy and in the six months after the new policy were recorded. The data were analyzed using a matched pairs analysis with the results shown here:

Paired T Test for Before - After Null Hypothesis: difference = 0 Alternative Hyp: difference > 0 Mean 3.9000 Std Error 1.3618 Mean - H0 3.9000 Lower 95% CI 0.8194 Upper 95% CI 6.9806 T 1.86 DF 9 P 0.0479 Cases Included 10 Missing Cases 0 

Which of the following conclusions is accurate if you are testing at alpha = .025?

Group of answer choices

a. We fail to reject Ho. There is insufficient evidence to indicate that the average number of complaints since the policy has been enacted has decreased.

b. We reject Ho. There is sufficient evidence to indicate that the average number of complaints since the policy has been enacted has increased.

c. We reject Ho. There is sufficient evidence to indicate that the average number of complaints since the policy has been enacted has decreased.

d. We accept Ho. There is sufficient evidence to indicate that the average number of complaints since the policy has been enacted has stayed exactly the same.