A bank has determined that the monthly balances of the saving accounts of its customers are normally distributed, with an average balance of $1200 and a standard deviation of $250. What proportions of the customers have monthly balances:
a. less than $1000?
b. more than $1125?
c. between $950 and $1075?

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The Answer of A bank has determined that the monthly balances of the saving accounts of its customers are normally distributed, with an average balance of $1200 and a standard deviation of $250. What proportions of the customers have monthly balances:
a. less than $1000?
b. more than $1125?
c. between $950 and $1075?

A Bank Has Determined That the Monthly Balances of the Saving