Question: Please show your complete and clear solution. BOX THE MEAN, VARIANCE AND STANDARD DEVIATION. A financial executive believes that each savings account customer has, on

Please show your complete and clear solution.BOX THE MEAN, VARIANCE AND STANDARD DEVIATION.

A financial executive believes that each savings account customer has, on average, tw credit cards. The following distribution represents the number of credit cards people ow Find the mean, variance, and standard deviation. Is the financial executive correct? Number of credit cards x 0 1 2 3 4 Probability P(x) 0.08 0.50 0.05 0.19 0.18

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