# An e-mail message will arrive at a time uniformly distributed between 9:00 a.m. and 11:00 a.m. You check e-mail at

## Question:

An e-mail message will arrive at a time uniformly distributed between 9:00 a.m. and 11:00 a.m. You check e-mail at 9:15 a.m. and every 30 minutes afterward.

(a) What is the standard deviation of arrival time (in minutes)?

(b) What is the probability that the message arrives less than 10 minutes before you view it?

(c) What is the probability that the message arrives more than 15 minutes before you view it?

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## Step by Step Answer:

**Related Book For**

## Applied Statistics And Probability For Engineers

**ISBN:** 9781118539712

6th Edition

**Authors:** Douglas C. Montgomery, George C. Runger

**Question Details**

Chapter #

**4**- Continuous Random Variables and Probability DistributionsSection: Exercises

Problem: 59

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