Number of days between billing and payment of charge account

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Reference no: EM131486110

The number of days between billing and payment of charge accounts at Groshen's, a large department store, is approximately normally distributed with a mean of 18 days and standard deviation of 4 days.

a. What is the probability that a bill will be paid between 12 and 18 days

b. What is the probability that a bill will be paid between 20 and 23 days?

c. What is the probability that a bill will be paid between 10 and 20 days?

d. What is the probability that a bill will take longer than 21 days to be paid?

e. What is the probability that a bill will take less than 16 days to be paid?

Reference no: EM131486110

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