The total number of hits by each wildcats player is .
The probability of the player is
.
Similarlly .
.
.
.
.
.
The probability distribution of is
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Graph :
\Graph of the probability distribution.
\The mean value is .
.
The mean value is .
(c)
\The variance of random variable is
.
.
The variance is .
The standard deviation is .
Substitute .
.
Therefore, the standard deviation is .
The probability distribution of is
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Graph of the probability distribution is.
\The mean value of a random variable is
.
The variance of a random variable is
.
The standard deviation of a random variable is
.