Discussion:
Q: Fishing Trout. Pyramid Lake is on the Paiute Indian Reservation in the Nevada. The lake is famous for cutthroat trout. Suppose a friend tells you that the average length of trout caught in Pyramid lake is = 19 inches. However the creel survey reported that for a random sample of 51 fish caught, the mean length was xbar = 18.5 inches with estimated standard deviation s = 3.2 inches. Do these data indicate that the average length of a trout caught in Lake Pyramid is less than 19 inches? Use a= 0.05.