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23. Nolsy streets: How much noisier are streets wheré cars travel faster? The following table presents noise levels in decibels and average speed in kilometers per hour for a sample of roads. Speed Noise 78.1 28.26 36.22 38.73 29.07 79.6 81.0 78.7 30.28 78.6 30.25 29.03 78.5 78.4 33.17 79.6 Source: Journal of Transportation Engineering 125:152-159 a. Compute the least-squares regression line for predicting noise level (y) from speed (x). b. Construct a 95% confidence interval for the slope. c. Test H: P speed is useful in predicting noise level? Use the a 0.01 level of significance. I O versus H: ,0. Can you conclude that

23. Nolsy streets: How much noisier are streets wheré cars travel faster? The following table presents noise levels in decibels and average speed in kilometers per hour for a sample of roads. Speed Noise 78.1 28.26 36.22 38.73 29.07 79.6 81.0 78.7 30.28 78.6 30.25 29.03 78.5 78.4 33.17 79.6 Source: Journal of Transportation Engineering 125:152-159 a. Compute the least-squares regression line for predicting noise level (y) from speed (x). b. Construct a 95% confidence interval for the slope. c. Test H: P speed is useful in predicting noise level? Use the a 0.01 level of significance. I O versus H: ,0. Can you conclude that

Mathematics For Machine Technology
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter29: Tolerance, Clearance, And Interference
Section: Chapter Questions
Problem 16A: Spacers are manufactured to the mean dimension and tolerance shown in Figure 29-12. An inspector...
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23. Nolsy streets: How much noisier are streets wheré cars travel faster? The following table presents noise levels in decibels and average speed in kilometers per hour for a sample of roads. Speed Noise 28.26 78.1 36.22 79.6 81.0 38.73 29.07 30.28 :30.25 29.03 33.17 Source: Journal of Transportation Engineering 125:152-159 78.7 78.6 2. 78.5 78.4 79.6 a. Compute the least-squares regression line for predicting noise level (v) from speed (x). b. Construct a 95% confidence interval for the slope. c. Test H P, =0 versus H: B, 0. Can you conclude that speed is useful in predicting noise level? Use the a = 0.01 level of significance. 24 ko.
Transcribed Image Text:23. Nolsy streets: How much noisier are streets wheré cars travel faster? The following table presents noise levels in decibels and average speed in kilometers per hour for a sample of roads. Speed Noise 28.26 78.1 36.22 79.6 81.0 38.73 29.07 30.28 :30.25 29.03 33.17 Source: Journal of Transportation Engineering 125:152-159 78.7 78.6 2. 78.5 78.4 79.6 a. Compute the least-squares regression line for predicting noise level (v) from speed (x). b. Construct a 95% confidence interval for the slope. c. Test H P, =0 versus H: B, 0. Can you conclude that speed is useful in predicting noise level? Use the a = 0.01 level of significance. 24 ko.
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