(Answered) Express courier service has found that the delivery time

Statistics

Express Courier Service has found that the delivery time for packages is normally distributed with mean 14 hours and standard deviation 2 hours.

a. What percent of the packages will be delivered in less than 18 hours?

b. What percent of the packages will be delivered in more than 16 hours?

c. What percent of the packages will be delivered in between 13 and 17 hours?

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