Answered: Nationwide, the mean amount of sales…

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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Question

Nationwide, the mean amount of sales each week at Lowe’s store is normally distributed with a mean of $4 million with a standard deviation of $0.86 million. Lowe’s has decided to close 15% of its stores, and has chosen amount of sales as the criterion on which the decision will be based (they are going to close the 15% of the stores with the lowest sales). How much in sales does a store have to have in order to not be closed? (please express your answer in millions and round your answer to 2 decimal places)

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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