Question

The bird watcher counted the number of birds in each flock that passed overhead. Number of birds Number of flocks 41 3 45 5 72 2 the number of birds that a randomly chosen flock had. What is the expected value of X? write your answer as a decimal

Answer 1

The expected value hence = Sum of Xip = (41x0.3)+(45x0.5)+(0.x72) = 49.2