For the next questions, test the given claim using the P-value method for
hypothesis testing about a mean. Assume a simple random sample has been taken,
the population standard deviation is known, and the population is normally
distributed.
At a dam in Oregon, fisheries biologists are studying the length of the pikeminnow fish
to investigate the population structure of resident fish. They collect a sample of 60
pikeminnow and find that the mean length is 15 inches. Assume the population standard
deviation is known from a previous study to be 1.5 inches. Use a .05 significance level
to test the claim that the pikeminnow have a mean length greater than 14 inches.
-Identify the null hypothesis and alternative hypothesis.