In: Statistics and Probability
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.
x | P(x)
0 | 0.05
1 | 0.12
2 | 0.24
3 | 0.31
4 | 0.17
5 | 0.11
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. Its mean is ____ . (Round to the nearest tenth as needed.)
B. The table is not a probability distribution.
If the table is a probability distribution, what is its standard deviation? Select the correct choice below and fill in any answer boxes within your choice.
A. Its standard deviation is ______.
B. The table is not a probability distribution.