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It is time-consuming and costly to have trucks stop in order to be weighed on a static scale. The Minnesota

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It is time-consuming and costly to have trucks stop in order to be weighed on a static scale. The Minnesota Department of Transportation considered using a scale that would weigh trucks while they were moving. Here is data for a sample of trucks that were weighed in motion and also on a static scale (1000s of lbs).

a. Determine the sample correlation coefficient r.
b. Test H0: ρ = .85 versus Ha: ρ > .85 at level .05.
c. How successful do you think the simple linear regression model would be in predicting static weight from in-motion weight? Explain.

Transcribed Image Text:

Truck In-motion Static Truck In-motion Static 1 26.0 27.9 6 36.2 34.5 2 29.9 29.1 7 25.1 3 39.5 38.0 8 31.0 27.8 29.6 4 25.1 27.0 9 35.6 33.1 5 31.6 30.3 10 40.2 35.5

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Related Book For  answer-question
Modern Mathematical Statistics With Applications

Modern Mathematical Statistics With Applications

ISBN: 9783030551551

3rd Edition

Authors: Jay L. Devore, Kenneth N. Berk, Matthew A. Carlton

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Question Details
Chapter # 12- Regression and Correlation
Section: Exercises
Problem: 60
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Question Posted: August 28, 2023 06:54:23
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