The manager of a small postal substation is trying to quantify the variation in the weekly demand for mailing tubes. She has decided to assume that this demand is normally distributed. She knows that on average 100 tubes are purchased weekly and that 90 percent of the time, weekly demand is below 115. What is the standard deviation of this distribution? The manager wants to stock enough mailing tubes each week so that the probability of running out of the tubes is no higher than 0.05. What is the lowest stock such level?
The manager of a small postal substation is trying to quantify the variation in the weekly demand for mailing tubes. She has decided to assume that this demand is normally distributed. She knows that on average 100 tubes are purchased weekly and that 90 percent of the time, weekly demand is below 115. What is the standard deviation of this distribution? The manager wants to stock enough mailing tubes each week so that the probability of running out of the tubes is no higher than 0.05. What is the lowest stock such level?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The manager of a small postal substation is trying to quantify the variation in the weekly demand for mailing tubes. She has decided to assume that this demand is
- What is the standard deviation of this distribution?
- The manager wants to stock enough mailing tubes each week so that the
probability of running out of the tubes is no higher than 0.05. What is the lowest stock such level?
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