43. Program Evaluation Methods Comparison. A client wants to determine whether there is a significant difference in the time required to complete a program evaluation with the three different methods that are in common use. The times (in hours) required for each of 18 evaluators to conduct a program evaluation follow.

Use a = .05 and test to see whether there is a significant difference in the time required by the three methods.

Method 1 Method 2 Method 3 68 62 58 74 73 67 65 75 69 76 68 57 77 72 59 72 70 62