Fishing: Atlantic Salmon Homser Lake, Oregon, has an Atlantic salmon catch and release program that has been very successful. The average fisherman’s catch has been m 5 8.8 Atlantic salmon per day (Source:

National Symposium on Catch and Release Fishing, Humboldt State University). 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

(i) Use a calculator with mean and sample standard deviation keys to verify that x 5 7.36 and s < 4.03.

(ii) 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 8.8.

AppendixLO1