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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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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.

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.
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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