Question

A stem-and-leaf plot for the number of homeruns hit by 30 high school teams is shown. find the probability that a team chosen at random hit more than 28 homeruns. 1 |8 9 2 |0 2 3 3 4 7 8 8 9 3 |1 1 3 4 5 5 6 8 9 9 9 4 |2 2 3 5 6 9 5 |1 5 a)0.933 b)0.509 c)0.233 d)0.667

Answer 1

The probability that a team chosen at random hit more than 28 home runs is 0.667

From the stem and leaf plot;

There are 20 high school teams that hit more than 28 home runs

Given that the total number of teams surveyed is 30.

The probability that a team chosen at random hit more than 28 home runs is:

p = 20/30

Simplify

p = 0.667

Hence, the probability that a team chosen at random hit more than 28 home runs is 0.667

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