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Twenty-one car salespeople were sampled to see how many cars they sold in a month; the following data was obtained: 31, 28, 29, 29, 27, 24, 38, 30, 31, 27, 25, 35, 25, 30, 32, 30, 31, 29, 31, 23, 33 Assuming the population standard deviation is σ=3, construct a 93% confidence interval for the mean number of cars sold per month by the population of car salespeople. xˉ=___ α2=___ zα2=___ Margin of Error: E=___ We are 93% confident that, on average, car salespeople sell between___ cars and ___cars per month.

Twenty-one car salespeople were sampled to see how many cars they sold in a month; the following data was obtained: 31, 28, 29, 29, 27, 24, 38, 30, 31, 27, 25, 35, 25, 30, 32, 30, 31, 29, 31, 23, 33 Assuming the population standard deviation is σ=3, construct a 93% confidence interval for the mean number of cars sold per month by the population of car salespeople. xˉ=___ α2=___ zα2=___ Margin of Error: E=___ We are 93% confident that, on average, car salespeople sell between___ cars and ___cars per month.

MATLAB: An Introduction with Applications
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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Twenty-one car salespeople were sampled to see how many cars they sold in a month; the following data was obtained:

31, 28, 29, 29, 27, 24, 38, 30, 31, 27, 25, 35, 25, 30, 32, 30, 31, 29, 31, 23, 33

Assuming the population standard deviation is σ=3, construct a 93% confidence interval for the mean number of cars sold per month by the population of car salespeople.

xˉ=___

α2=___

zα2=___

Margin of Error: E=___

We are 93% confident that, on average, car salespeople sell between___ cars and ___cars per month.

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