The following output from MINITAB presents a confidence interval for the mean difference between matched pairs
$\begin{array} { c c c c c }
& \mathrm { N } & \text { Mean } & \text { StDev } & \text { SEMean } \
\text { Difference } & 18 & 11.2063 & 3.1508 & 0.742651
\end{array}$
95% CI for mean difference: (9.639447,12.773153)
What is the point estimate of $\mu _ { d } ?$
A) 11.2063
B) 17
C) 3.1508
D) 0.742651

Question

The following output from MINITAB presents a confidence interval for the mean difference between matched pairs
$\begin{array} { c c c c c } 
& \mathrm { N } & \text { Mean } & \text { StDev } & \text { SEMean } \
\text { Difference } & 18 & 11.2063 & 3.1508 & 0.742651
\end{array}$
 95%  CI for mean difference:  (9.639447,12.773153) 
What is the point estimate of $\mu _ { d } ?$
A)  11.2063 
B) 17
C)  3.1508 
D)  0.742651

Quizplus · Accepted Answer

The point estimate of $\mu_d$ is the sample mean of the differences, which is given as 11.2063.

The Following Output from MINITAB Presents a Confidence Interval for the Mean