The mean unleaded gas prices were compared between Baltimore, MD and Philadelphia, PA. To estimate the difference in the mean, a 95% confidence interval was used and computed to be (.45, .76). What conclusion can be made about the differences in the mean gas prices of the two cities?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Can you explain more on why D is correct?
11:15
AA
A study.240tutoring.com
(140)
The Baltimore, MD sample
displays a lot of variability in the
mean data.
There is no mention of variability in
this problem, or enough information to
come to this conclusion.
The mean gas prices are the same
in the two cities.
The mean gas prices between the
two cities most likely vary by at
least $0.45.
Since the confidence interval is 95%
accurate and begins at $0.45, this is a
strong conclusion.
Back
Next
Correct Choice: D
Your Choice: B
Transcribed Image Text:11:15 AA A study.240tutoring.com (140) The Baltimore, MD sample displays a lot of variability in the mean data. There is no mention of variability in this problem, or enough information to come to this conclusion. The mean gas prices are the same in the two cities. The mean gas prices between the two cities most likely vary by at least $0.45. Since the confidence interval is 95% accurate and begins at $0.45, this is a strong conclusion. Back Next Correct Choice: D Your Choice: B
6:40
AA
A study.240tutoring.com
(L40
+ Return to course
The mean unleaded gas prices were
compared between Baltimore, MD and
Philadelphia, PA. To estimate the difference
in the mean, a 95% confidence interval was
used and computed to be (.45, .76). What
conclusion can be made about the
differences in the mean gas prices of the
two cities?
There are no gas stations in
Baltimore, MD that have the same
gas price for unleaded as a gas
station in Philadelphia, PA.
The Baltimore, MD sample
displays a lot of variability in the
mean data.
Back
Next
Correct Choice: D
Your Choice: B
Transcribed Image Text:6:40 AA A study.240tutoring.com (L40 + Return to course The mean unleaded gas prices were compared between Baltimore, MD and Philadelphia, PA. To estimate the difference in the mean, a 95% confidence interval was used and computed to be (.45, .76). What conclusion can be made about the differences in the mean gas prices of the two cities? There are no gas stations in Baltimore, MD that have the same gas price for unleaded as a gas station in Philadelphia, PA. The Baltimore, MD sample displays a lot of variability in the mean data. Back Next Correct Choice: D Your Choice: B
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