Please show the working in answering this question. ditor or write Question: A fish commissioner wants to determine if the lengths of the young trout used to stock the streams is lower than the typical 6 inches. She takes a random sample of 20 of these fish and finds the and obtains sample mean 5.785 inches with sample standard deviation 0.26 inches. It is assumed the lengths of the young trout in the population are normally distributed. Conduct a test with a 1% significance level to test the fish commissioner's hypothesis.