Find the mean number of credit cards find the standard

Reference no: EM13642673

a bank president is interested in the average number of credit cards that a savigns account customer has. Bank records revealed the following percentages (probabilities) of credit cards owned.

Number of Cards, X Percentage, P(X)

0 17%

1 35%

2 48%

A) Find the mean number of credit cards

B) Find the standard deviation in this distriubtion of credit cards

Reference no: EM13642673

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