The following output from MINITAB presents a confidence interval for the mean difference between matched pairs. $\begin{array} { c c c c c } & \mathrm { N } & \text { Mean } & \text { StDev } & \text { SEMean } \ \text { Difference } & 16 & 4.9474 & 6.3070 & 1.57675 \end{array}$

$95 \%$ CI for mean difference: $( 1.586646,8.308154 )$

What is the point estimate of $\mu _ { d }$ ?
A) 1.57675
B) 15
C) 4.9474
D) 6.3070

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 } & 16 & 4.9474 & 6.3070 & 1.57675 \end{array}

95 \%

CI for mean difference:

( 1.586646,8.308154 )

What is the point estimate of

\mu _ { d }

?

$95 \%$ CI for mean difference: $( 1.586646,8.308154 )$

What is the point estimate of $\mu _ { d }$ ?
A) 1.57675
B) 15
C) 4.9474
D) 6.3070

Quizplus · Accepted Answer

The point estimate of $\mu_d$ is the mean difference, which is given as the "Mean" in the table, which is 4.9474.

Note: Option A is the value of the standard error of the mean difference, option B is not a valid answer as it is not present in the given information, and option D is the value of the standard deviation of the mean difference.

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