Homser Lake, Oregon, has an Atlantic salmon catch-and-release program that has been very successful. The average fisherman's catch has been = 9.6 Atlantic salmon per day. Suppose that a new quota system restricting the number of fishermen has been put into effect this season. A random sample of fishermen gave the following catches per day: 12 6 11 12 5 0 2 7 8 7 6 3 12 12 Use a calculator with sample mean and standard deviation keys to find x and s. (Round your answers to two decimal places.)

x=

s=

Assuming the catch per day has an approximately normal distribution, use a 5% level of significance to test the claim that the population average catch per day is now different from 9.6. (a) What is the level of significance?

What is the value of the sample test statistic? (Round your answer to three decimal places.)