Find the mean variance and standard deviation for the

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A student conducted a survey of credit card usage by 25 of her friends. Each subject was asked how many times he or she used a credit card within the past seven days, and the results are listed as relative frequencies in the accompanying table.

X = 0 1 2 3 4

P(X)= .16 .24 .40 .16 .04

Find the mean, variance and standard deviation for the distribution.

Reference no: EM13631492

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