Compute probability of chages less than a value

Reference no: EM13146100

The mean amount of gasoline and servies charged by Key Refining Company credit customers is $70 per month. The distribution of amonuts spend is approximately normal with a standard deviation of $10. Compute the probability of selecting a credit card customer at random and finding the customer charged between $70 and $83 last month. Compute the probability of chages less than $54.

Reference no: EM13146100

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