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

## Question:

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 H_{0}: ρ = .85 versus H_{a}: 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.

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## Step by Step Answer:

**Related Book For**

## Modern Mathematical Statistics With Applications

**ISBN:** 9783030551551

3rd Edition

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

**Question Details**

Chapter #

**12**- Regression and CorrelationSection: Exercises

Problem: 60

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