B. There is a [circle one: VERYSTRONG WEAK OR NO] correlation between START and

Question

B. There is a [circle one: VERYSTRONG WEAK OR NO] correlation between START and MONTH1. This correlation is [circle one: SIGNIFICANT NONSIGNIFICANT] at the a = 0.05 level. Thus, we [circle one: REJECT FAIL_TO_REJECT] the null hypothesis that there is no relationship between the starting weight and the weight after 1 month. We want to compare the mean starting weight and the mean ending weight (after 2 months of dieting) with a paired t-test to see if there is a significant weight difference before and after the diet intervention. A. Use SPSS to fill in any missing values in the following table. B. Was there a significant difference in weight after dieting at the a = 0.05 level? Yes or No. Explain your answer.

Explanation / Answer

Part-B

There is very strong correlation between START and MONTH1. This correlation is significant at =0.05. Thus we reject the null hypothesis that there is no relationship between the starting weight and the weight after 1 month

Part-A

Df=10-1=9

p-value=0.802 using excel function =TDIST(0.258,9,2)

Part-B

As p-value=0.802>0.05, there is not a significant difference in weight after dieting at the =0.05.

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