Question: In your research study, you are interested in determining if there is a difference in the mean score responses for a question about the effectiveness of flight simulator training. You believe that there is a difference in opinion (mean score responses) according to the number of flight hours a pilot has. Group 1 fewer than 500 flight hours; Group 2 has 501 to 1,500 flight hours; Group 3 has 1,501 to 2,500; and Group 4 has more than 2,500 flight hours. There are a total of 60 responses among all four groups. You will use ANOVA, Chapter 11.

1. What is the hypothesis?
2. Null?
3. What are the degrees of freedom for the numerator and for the denominator?
4. Use the "Critical Values of F" table to find the critical value (p < .05,two-tailed)
5. If the test statistic F is 6.371691, and p = .000859, do you reject or accept the null?
6. Why?
7. Would your decision be the same at 99% confidence, p < .01?

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