Customers of the Key Refining Company charge an average of $70 per month. The distribution of amounts charged is approximately normal,with a standard deviation of $10. What is the probability of selecting a credit card customer at random and finding the customer charged between $70 and $83?
A)0.1962
B)0.4032
C)0.3413
D)0.4750

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The Answer of Customers of the Key Refining Company charge an average of $70 per month. The distribution of amounts charged is approximately normal,with a standard deviation of $10. What is the probability of selecting a credit card customer at random and finding the customer charged between $70 and $83?
A)0.1962
B)0.4032
C)0.3413
D)0.4750

Customers of the Key Refining Company Charge an Average of $70