Using the binomial distribution, the mean number of balls you would expect him to catch is of 7.2.
It is the probability of exactly x successes on n repeated trials, with p probability of a success on each trial.
The expected value of the binomial distribution is:
E(X) = np
For this problem, the parameters are:
n = 8, p = 0.9.
Hence the mean is:
E(X) = np = 8 x 0.9 = 7.2.
More can be learned about the binomial distribution at https://brainly.com/question/24863377
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