Question

A cricketer has a mean 58 runs in nine innings.Find out how many runs are to be scoredin the 10th inningd to raise the mean scroce to 61.

Answer 1

88

Explanation:

Nine innings have a mean of 58 runs, and the tenth inning will have x runs. So the overall mean is:

μ = (9×58 + x) / 10

We want the mean to be 61, so:

61 = (9×58 + x) / 10

610 = 522 + x

x = 88

The cricketer must score 88 runs to raise the mean to 61.