Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is $\mu _ { d } = 0$
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.
$\begin{array} { l | c c c c c c c c c }
\text { Subject } & \text { A } & \text { B } & \text { C } & \text { D } & \text { E } & \text { F } & \text { G } & \text { H } & \text { I } \
\hline \text { Before } & 168 & 180 & 157 & 132 & 202 & 124 & 190 & 210 & 171 \
\hline \text { After } & 162 & 178 & 145 & 125 & 171 & 126 & 180 & 195 & 163
\end{array}$
A) 9.468
B) 3.156
C) 0.351
D) 1.052

Question

Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is $\mu _ { d } = 0$
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.
$\begin{array} { l | c c c c c c c c c } 
\text { Subject } & \text { A } & \text { B } & \text { C } & \text { D } & \text { E } & \text { F } & \text { G } & \text { H } & \text { I } \
\hline \text { Before } & 168 & 180 & 157 & 132 & 202 & 124 & 190 & 210 & 171 \
\hline \text { After } & 162 & 178 & 145 & 125 & 171 & 126 & 180 & 195 & 163
\end{array}$
A)  9.468 
B)  3.156 
C)  0.351 
D)  1.052

Quizplus · Accepted Answer

To calculate the t-test statistic for paired sample data, you first find the differences between each pair, calculate the mean of these differences ($\bar{d}$), and the standard deviation of these differences (s_d). Then use the formula $t = \frac{\bar{d} - \mu_d}{s_d / \sqrt{n}}$, where $n$ is the number of pairs, and $\mu_d = 0$ is the hypothesized mean difference. The calculation yields a t-test statistic of approximately 3.156.

Assume That You Want to Test the Claim That the Paired