# Acrylic bone cement is commonly used in total joint replacement to secure the artificial joint. Data on the force (measured

## Question:

a. Estimate the difference between the mean breaking force in a dry medium at 37 degrees and the mean breaking force at the same temperature in a wet medium using a 90% confidence interval.

b. Is there sufficient evidence to conclude that the mean breaking force in a dry medium at the higher temperature is greater than the mean breaking force at the lower temperature by more than 100 N? Test the relevant hypotheses using a significance level of .10.

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**Related Book For**

## Statistics The Exploration & Analysis Of Data

**ISBN:** 9780840058010

7th Edition

**Authors:** Roxy Peck, Jay L. Devore

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