O Macmillan LearningmanagersA research firm supplies manufacturers with estimates of the sales of their products from samples of stores. Marketingoften look at the sales estimates and ignore sampling error. An SRS of 50 stores this month shows mean sales of 41units of a particular appliance with standard deviation of 11 units. During the same month last year, an SRS of 52 stores gavemean sales of 38 units of the same appliance with a standard deviation of 13 units. An increase from 38 to 41 is a rise of7.9%. The marketing manager is happy because sales are up 7.9%.(a) Give a 95% confidence interval for the difference in mean number of units of the appliance sold at all retail stores. Give youranswers to three decimal places.lower bound:upper bound:F818A

Sample mean [x1] = 41Sample mean [x2] = 38Sample standard deviation [s1] =11Sample standard…

Answered: a particular appliance with standard…

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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