Answered: 39. A car company wants to estimate a…

Name: 39. A car company wants to estimate a car’s MPG and doesn’t want the m
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Description: 39. A car company wants to estimate a car’s MPG and doesn’t want the margin of error to be more than 0.5 MPG. (Assume the standard deviation for all cars of this brand is set at 3 MPG in the manufacturing plant.) How many cars should be sampled at le

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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39. A car company wants to estimate a car’s MPG and doesn’t want the margin of error to be more than 0.5 MPG. (Assume the standard deviation for all cars of this brand is set at 3 MPG in the manufacturing plant.) How many cars should be sampled at least? (choose the smallest one)

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None of the above / cannot tell based on the information given

139

138

(I AM CONFUSED BECAUSE I HAVE HAD SOMEONE SAY IT IS 139 AND THEN SOMEONE SAY IT IS NONE OF THE ABOVE SO I AM LOST, PLEASE HELP!)

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