Your organization has a goal of 15 days for the average processing of a purchase request (PR) from notification to final approval. They are only concerned if it takes longer than 15 days.
A sample of 25 PRs produced a mean of 15.5 days and a standard deviation of 1.5 days. Test at the 10% level of significance whether they are meeting their goal. Select the correct answer out of each pair of choices. (Carry intermediate calculations to three decimal places.)