Five males with a particular genetic disorder have one child each. The random variable x is the number of children among the five who inherit the genetic disorder. Determine whether the table describes a probability distribution. If it​ does, find the mean and standard deviation.

x
0
1
2
3
4
5

​P(x)
0.0010
0.0146
0.0879
0.2637
0.3955
0.2373
Find the mean of the random variable x. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.
A.
muequals
​(Round to one decimal place as​ needed.)
B.
The table is not a probability distribution.
Find the standard deviation of the random variable x. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.
A.
sigmaequals
​(Round to one decimal place as​ needed.)
B.
The table is not a probability distribution.

2 answers

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