Assume that you want to test the claim that the paired sample data come from a population for which the mean difference

[answerhappygod]

Assume that you want to test the claim that the paired sample
data come from a population for which the mean difference is
μd = 0. Compute the value of the t test statistic.
Round intermediate calculations to four decimal places as needed
and final answers to three decimal places as needed.
The following table shows the weights of nine subjects before
and after following a particular diet for two months. You wish to
test the claim that the diet is effective in helping people lose
weight. What is the value of the appropriate test
statistic?
3.156
9.468
1.052
0.351