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. LOADING... Click the icon to view the data. 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 nothing. (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 nothing. (Round to the nearest tenth as needed.) B. The table is not a probability distribution. x P(x) 0 0.020.02 1 0.120.12 2 0.250.25 3 0.330.33 4 0.150.15 5 0.130.13

Explanation / Answer

Here the data is not provided properly. No problem, you can find the correct answer

first find the sum of probabilities of probability distribution. If total probability is not one . then declare it is not a probability distribution (choice B)

if the sum is one . Mean = Sum (x*probability)= (i.e first multiply x* probability and then add sum of these probabilities )

variance = sum ( x*x* probabillity)- (Mean)^2

Standard deeviation = square root of (variance)

Hope this helps you

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