Ted is not particularly creative. He uses the pickup line \"If I could rearrange

Question

Ted is not particularly creative. He uses the pickup line "If I could rearrange the alphabet, I'd put U and I together "The random variable x is the number of girls Ted approaches before encountering one who reacts positive. Determine whether the table describes a probability distribution. If it does, find its mean and standard deviation Find the mean mu of the random variable x. Select the correct choice below and, If necessary, fill in the answer box to complete your choice A. mu = (Round to one decimal place as needed.) B. The table is not a probability distribution. Find the standard deviation sigma of the random variable x. Select the correct choice below and if necessary, fill in the answer box to complete your choice A. sigma = (Round to one decimal place as needed.) B. The table is not a probability distribution.

Explanation / Answer

In oder to verify whether the given table is probability distribution

1. The probability of each value is between 0 and 1.

2. The sum of the probabilities =1

Here first condition satisfies but the second does not because sum of the probabilities is less than 1.

hence the table is not probability distribution

x P(x) 1 0.002 2 0.035 3 0.125 4 0.217 5 0.264

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