Question

The following data are yields of a given process as determined by four analysts.

Analyst                           Yield

1                                     8, 5, -1, 6, 5, 3

2                                     7, 12, 5, 3, 10

3                                     4, -2, 1

4                                     1, 6, 10, 7

Run a one-way ANOVA test to check

Answer 1

null hypothesis:Ho:there is no difference in mean yield determined by 4 analysts

alternate hypothesis:Ha:there is signifcant difference in mean yield determined by 4 analysts

for at (3,14) degree of freedom and at 0.05 level critical value F=3.34

Decision: as test statitic is not in rejection region we fail to reject null hypothesis

Conclusion:we do not have sufficient evidence to conclude that there is signifcant difference in mean yield determined by 4 analysts