In the accompanying table, the random variable x represents the number of televi

Question

In the accompanying table, the random variable x represents the number of televisions in a household in a certain country. Determine whether or not the table is a probability distribution. If it is a probability distribution, find its mean and standard deviation.

If the table is a probability distribution, what is its mean? Select the correct choice below and fill in any answer boxes within your choice.

A. Find the mean

(Round to the nearest tenth as needed.)

x P(x)
0 0.01
1 0.13
2 0.24
3 0.28
4 0.21
5 0.13

B. Find the standard deviation for a probability distribution, first find the variance.

Explanation / Answer

Sum of probabilities is equal to 1. So, the table is probability distribution.

Mean= 2.94

Standard deviation= 1.256

Variance= 1.576

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