A major credit card company has determined that its customers charge an average of $280 per month on their accounts with a standard deviation of $20

a. What percentage of the customers charges more than $275 per month?
b. What percentage of the customers charges less than $243 per month?
c. What percentage of the customers charges between $241 and $301.60 per month?


a. 59.87%
b. 3.22%
c. 83.43%

Business

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