Required Information How much noisier are streets where cars travel faster? An article reports noise levels in decibels and average speed in kilometers per hour for a sample of roads. The following table presents the results. Speed 28.26 Noise 78.1 36.22 79.6 38.73 81.0 29.07 78.7 30.28 78.6 30.25 78.2 29.03 33.17 78.4 79.6 Can you conclude that the mean noise level for streets whose average speed is 30 kilometers per hour is greater than 78 decibels? Perform a hypothesis test and report the P-value. " Since 0.001

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 42PFA
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Required Information
How much noisier are streets where cars travel faster? An article reports noise levels in decibels and average speed in
kilometers per hour for a sample of roads. The following table presents the results.
Speed
28.26
Noise
78.1
36.22
79.6
38.73
81.0
29.07
78.7
30.28
78.6
30.25
78.2
29.03
33.17
78.4
79.6
Can you conclude that the mean noise level for streets whose average speed is 30 kilometers per hour is greater than 78 decibels?
Perform a hypothesis test and report the P-value.
Since 0.001 <P<0.005, we can
hour is greater than 78 decibels.
conclude that the mean noise level for streets whose mean speed is 30 kilometers per
Transcribed Image Text:ces Required Information How much noisier are streets where cars travel faster? An article reports noise levels in decibels and average speed in kilometers per hour for a sample of roads. The following table presents the results. Speed 28.26 Noise 78.1 36.22 79.6 38.73 81.0 29.07 78.7 30.28 78.6 30.25 78.2 29.03 33.17 78.4 79.6 Can you conclude that the mean noise level for streets whose average speed is 30 kilometers per hour is greater than 78 decibels? Perform a hypothesis test and report the P-value. Since 0.001 <P<0.005, we can hour is greater than 78 decibels. conclude that the mean noise level for streets whose mean speed is 30 kilometers per
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