The Anderson Lumber Company Has Three Sawmills That Produce Boards

Multiple Choice

The Anderson Lumber Company has three sawmills that produce boards of different lengths. The following table is a joint frequency distribution based on a random sample of 1000 boards selected from the lumber inventory. Based on these data, if three boards are selected at random, the probability that all three were made at sawmill A is:

A) 0.037
B) 0.334
C) 1.00
D) 0.556