Need only a handwritten solution only (not a typed one). As a statistical analyst for a retail store, you need to construct a 98% confidence interval to estimate the true mean hourly arrival rate ofcustomers. After making 37 hourly observations, you determine that the sample mean arrival rate is 80 customers per hour. Thepopulation standard deviation is known to be 5 customers per hour.a. Compute the margin of error for the 98% confidence intervalRound your critical value to three decimal places. Do not round any other intermediate calculations. Round your final answer tothree decimal places.Margin of error =customers per hourb. Using your answer to Part a, compute the 98% confidence interval for the true mean hourly arrival rate.Round your final answers to three decimal places.Lower confidence limit=customers per hour Upper confidence limit=[customers per hour.c. Suppose the store manager has claimed that the true mean arrival is really 84 customers per hour. At the 98% confidence level, isthe manager's claim contradicted?O NoO Yes

Answered: Image /qna-images/answer/8be3b03c-cedc-4962-b38e-6e0b407a1fcb.jpg

Answered: As a statistical analyst for a retail…

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 owner of a stereo store wants to advertise that he has many different sound systems in stock. The store carries 6 different CD players, 10 different receivers, and 9 different speakers. Assuming a sound system consists of one of each, how many different sound systems can he advertise?
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1. Solve the following set of equations using Excel: 6x1 + .2x2 + X3 X4 = 14, %3D 5x) + 4x2 + X3 X4 3x5 = 0, 2x1 + 2x2 + 3x3 + 2x4 X5 8, + X2 X3 + 3x4 + 2x5 5, %3D 3x1 X2 + 5x3 X4 + 5x5 0. | I + +

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