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Contingency Tables to detemine if a relationship exists

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A study regarding the relationship between age and the amount of pressure salespersonnel feel in relation to their jobs revealed the following sample information. At the .01 significance level, is there a relationship between job pressure and age?
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A step-by-step solution is provided in order to determine whether or not there is a relationship between 2 variables.

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Q: A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information. At the .01 significance level, is there a relationship between job pressure and age?

Degree of Job Pressure
Age (years) Low Medium High Totals
Less than 25 20 18 22 60
25 up to 40 50 46 44 140
40 up to 60 58 63 59 180
60 and older 34 43 43 120
Totals 162 170 168 500

A: See the attached file for a more detailed response.

In order to solve this problem we form a contingency table. We then compare expected values of each cell with observed values (those found in the table above) to see if there is a difference. If there is a difference then we conclude that there ...

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