Stat 2300 A Negative Option Club Has Noted The Number Of Days

A negative option club has noted the number of days between billing and payment is normally distributed with a mean of 16 days and a standard deviation of 5 days. a. What proportion of customers pay in 12 to 20 days after billing? (5 points)b. After how many days will 25% of all bills remain unpaid? (5 points)

STAT 2300 A negative option club has noted the number of days

Question
A negative option club has noted the number of days between billing and payment is normally distributed with a mean of 16 days and a standard deviation of 5 days.

a.What proportion of customers pay in 12 to 20 days after billing? (5 points)

b.After how many days will 25% of all bills remain unpaid? (5 points)

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