Fishing: Trout Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout. Suppose a friend tells you that the average length of trout caught in Pyramid Lake is m 519 inches. However, the Creel Survey

(published by the Pyramid Lake Paiute Tribe Fisheries Association) reported that of a random sample of 51 fish caught, the mean length was x 518.5 inches, with estimated standard deviation s 5 3.2 inches. Do these data indicate that the average length of a trout caught in Pyramid Lake is less than m 519 inches? Use a 5 0.05.

AppendixLO1