Exercise 3 includes paired salary and stress level ranks for 10 randomly selected jobs. The physical demands of the jobs were also ranked; the salary and physical demand ranks are given below. Does there appear to be a relationship between the salary of a job and its physical demands?

Use the rank correlation coefficient to test the claim of no correlation between the two variables. Use a significance level of α = 0.05.

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Salary 2 6 3 5 710 98 41 Physical demand 5 2, 381091 7 6 4 Based on data from The Jobs Rated Almanac.