In a test of weight loss programs, 93 subjects were divided such that 31 subject
ID: 3202802 • Letter: I
Question
In a test of weight loss programs, 93 subjects were divided such that 31 subjects follwed each of 3 diets. Each was weighed a year after starting the diet and the results are in the Anova table below. Use a 0.05 significance level to test the claim that the mean weight loss is the same for different diets.
Source of variation SS df MS F P-value F crit
Between Groups 129.948 2 64.97400 1.9811 0.143886 3.097698
Within Groups 2951.724 90 32.79693
Total 3081.672 92
Should the null hypothesis that all the diets have the same mean weight loss be rejected?
YesYes,
because the P-value is
greater thangreater than
the significance level.
B.
NoNo,
because the P-value is
less thanless than
the significance level.
C.
YesYes,
because the P-value is
less thanless than
the significance level.
D.
NoNo,
because the P-value is
greater thangreater than
the significance level.
Explanation / Answer
Answer is No
Expalnation:
null hypothesis: all the diets have the same mean weight loss
Alternative hyp: all the diets have the different mean weight loss
P value =0.143886
alpha= 0.05
P > 0.05 we donot reject the H0.
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