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Question
Ziba Corporation wants to increase the productivity of its line workers. Four different programs have been suggested to help increase productivity. Twenty employees, making up a sample, have been randomly assigned to one of the four programs and their output for a day's work has been recorded. You are given the results below.| Program A | Program B | Program C | Program D |
| 150 | 150 | 185 | 175 |
| 130 | 120 | 220 | 150 |
| 120 | 135 | 190 | 120 |
| 180 | 160 | 180 | 130 |
| 145 | 110 | 175 | 175 |
a. State the null and alternative hypotheses.
b. Construct an ANOVA table.
c. At 95% confidence, test to determine if the means of the three populations are equal.
Answer
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