The data in the table below presents the hourly quantity of production for three lines of production processes over the first 4 days in XYZ Company. Answer the questions based on the Excel Output given below.

Day Process 1 Process 2 Process 3

1 33 33 28

2 30 35 36

3 28 30 30

4 29 38 34

ANOVA: Single Factor

SUMMARY

Groups Count Sum Average Variance

Process 1 4 120 30 4.66667

Process 2 4 136 34 11.3333

Process 3 4 128 32 13.3333

ANOVA

Source of Variation SS df MS F P value

Between Groups 32 ? ? ?

Within Groups 88 ? ?

Total 120 11

a. State the null and alternative hypothesis for single factor ANOVA. (1 mark)

b. State the decision rule ( = 0.05). (4 marks)

c. Calculate the test statistic. (3 marks)

d. Make a decision. (2 marks)