1.A researcher wants to test whether production errors differ by time of day (Day, Evening, and Nigh shift).She randomly assigns a group of accountants to each of three different shifts and measures the number of errors they make per month.She obtains the following results:

Day Evening Night

= 11= 27 = 36

= 23= 163= 273

n = 6n = 6n = 6

Conduct the appropriate statistical analysis.Set alpha to 0.05.

Step 1:State your hypotheses:

Step 2: Set up the criteria for making the decision

Step 3: Conduct the appropriate statistical test by completing the following summary table:

Source SS df MS F

Between 53.2 ______ _____ _____

Within ______ _______ ______ ______

Total _______ ________ _______ _______

Step 4:Based on your answers above, state your decision about the null hypothesis:

Reject the Null Hypothesis Fail to Reject the Null Hypothesis

1A.Based on your decision about the null in the previous problem, is it appropriate to conduct a post-hoc test?