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Part 1
College students are randomly selected and arranged in groups of three. The random variable x is the number in the group who say that they take one or more online courses. Determine whether 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.
x
​P(x)

0
0.106
1
0.357
2
0.392
3
0.145
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Part 1
Does the table show a probability​ distribution? Select all that apply.
A.
​Yes, the table shows a probability distribution.
B.
​No, the random variable x is categorical instead of numerical.
C.
​No, the numerical values of the random variable x are not associated with probabilities.
D.
​No, not every probability is between 0 and 1 inclusive.
E.
​No, the sum of all the probabilities is not equal to 1