Falls/ does not fall, Reject/do not reject, Provide/do not provide
Solution:
In excel install analysis tool pak.
Go to data >Data analysis>ANOVA single factor
You will get
SUMMARY | ||||||
Groups | Count | Sum | Average | Variance | ||
sample-1 | 3 | 18 | 6 | 9 | ||
sample-2 | 3 | 9 | 3 | 7 | ||
sample-3 | 4 | 16 | 4 | 6.666667 | ||
ANOVA | ||||||
Source of Variation | SS | df | MS | F | P-value | F crit |
Between Groups | 14.1 | 2 | 7.05 | 0.949038 | 0.431824 | 4.737414 |
Within Groups | 52 | 7 | 7.428571 | |||
Total | 66.1 | 9 | ||||
COMING TO ANSWERS:
SST=66.1
SSB=14.1
SSW=52
Solution-b:
ANOVA | ||||
Source of Variation | Sum of squares | Degrees of freedom | Mean sum of squars | F |
Between Groups | 14.1 | 2 | 7.05 | 0.949038 |
Within Groups | 52 | 7 | 7.428571 | |
Total | 66.1 | 9 |
Solution-c:
Ho:
Ha:Not all means are equal
F critical=4.737
Since F statistic does not fall in the rejection region,accept Ho.The data so not provide sufficient evidence that the population
means are not all the same.
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