The table shows the average hours worked per week and the numbers of on-the-job injuries for a

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The table shows the average hours worked per week and the numbers of on-the-job injuries for a random sample of U.S. companies in a recent year. At \(\alpha=0.10\), can you conclude that there is a significant correlation between average hours worked and the number of on-the-job injuries?

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When you are testing the significance of the Spearman rank correlation coefficient and the sample size \(n\) is greater than 30, you can use the expression below to find the critical value.
\[
\frac{ \pm z}{\sqrt{n-1}}, z \text { corresponds to the level of significance }
\]
Test the Spearman rank correlation coefficient.

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Elementary Statistics Picturing The World

ISBN: 9781292260464

7th Global Edition

Authors: Betsy Farber, Ron Larson

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