In: Statistics and Probability
A company is interested in the satisfaction of their employees, so they hired a consulting firm to conduct an in-house study. Employees were classified into three categories (support staff, analysts and executives) and asked if they felt the company had a healthy work environment.
The data:
Yes | No | |
Support staff | 9 | 32 |
Analysts | 14 | 37 |
Executives | 12 | 5 |
You're interested in whether employee classification has anything to do with attitudes about work environment. For step 1, instead of re-writing this question of interest, instead say whether the appropriate comparison is across columns, or across rows.
Step 2: State the null hypothesis.
Step 3: State the alternative hypothesis.
Step 4: What is the correct level of alpha, and which tails matter? Choose all statments that are correct.
Step 5: Which statistical test are you using?
Step 6: What is the value of the test statistic?
Step 6 continued: How many degrees of freedom in this test?
Step 7: What is the critical value for the test statistic?
Step 8: How does the test statistic compare to the critical value?
Step 9: Based on this comparison, do you accept or reject your null hypothesis?
Step 10: What do you conclude from this analysis?