1. A total of one hundred and twenty newly hired employees are equally divided by random assignment to one or another of five training conditions that differ in terms of the number of hours of training they receive per day (one, two, three, four, or five). Performance is measured on a 100-point scale for each trainee after three months of training. The means for each condition are shown in the table below.

One Two Three Four Five

Mean 50 60 65 68 70

b. Use Fishers and Tukeys test to determine which groups are significantly different from each other and what can be concluded from the results? Is Fisher's justified here and why?