A random selection of people in a city were asked “How much do you spend on gasoline per month?” The responses were as follow: 0 0 20 40 40 40 45 45 50 50 60 60 60 75 75 80 80 80 100 120 120 150 150 150 150 160 160 175 180 200 200 200 200 200 220 Construct a 95% confidence interval that contains the average monthly income for all people in this city. Assume a population standard deviation of $15.
A random selection of people in a city were asked “How much do you spend on gasoline per month?” The responses were as follow: 0 0 20 40 40 40 45 45 50 50 60 60 60 75 75 80 80 80 100 120 120 150 150 150 150 160 160 175 180 200 200 200 200 200 220 Construct a 95% confidence interval that contains the average monthly income for all people in this city. Assume a population standard deviation of $15.
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
10.) A random selection of people in a city were asked “How much do you spend on gasoline per month?” The responses were as follow:
0 0 20 40 40
40 45 45 50 50
60 60 60 75 75
80 80 80 100 120
120 150 150 150 150
160 160 175 180 200
200 200 200 200 220
Construct a 95% confidence interval that contains the average monthly income for all people in this city. Assume a population standard deviation of $15.
Transcribed Image Text:10. A random selection of people in a city were asked “How much do you spend on gasoline per
month?" The responses were as follow:
20
40
40
40
45
45
50
50
60
60
60
75
75
80
80
80
100
120
120
150
150
150
150
160
160
175
180
200
200
200
200
200
220
Construct a 95% confidence interval that contains the average monthly income for all people
in this city. Assume a population standard deviation of $15.
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