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An analysis of the amount of interest paid monthly by a bank's Visa cardholders reveals that the amount is normally distributed with a mean of

An analysis of the amount of interest paid monthly by a bank's Visa cardholders reveals that the amount is normally distributed with a mean of 26 dollars and a standard deviation of 9 dollars.

a) What proportion of the bank's Visa cardholders pay more than 29 dollars in interest?

Proportion =

b) What proportion of the bank's Visa cardholders pay more than 38 dollars in interest?

Proportion =

c) What proportion of the bank's Visa cardholders pay less than 17 dollars in interest?

Proportion =

d) What interest payment is exceeded by only 19% of the bank's Visa cardholders?

Interest Payment =

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