Three males with an X-linked genetic disorder have one child each. The random variable x is the

Question:

Three males with an X-linked genetic disorder have one child each. The random variable x is the number of children among the three who inherit the X-linked genetic disorder.

x P (x)
0..................0.125
1..................0.375
2..................0.375
3..................0.125

Determine whether or not a probability distribution is given. If a probability distribution is given, find its mean and standard deviation. If a probability distribution is not given, identify the requirements that are not satisfied.

Distribution
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