8.3.3 - Minitab Express: Paired Means Test

The steps for constructing a confidence interval or conducting a paired means \(t\) in Minitab Express are identical. The output that procedure provides includes both the confidence interval and the \(p\)-value for determining statistical significance.

MinitabExpress  – Conducting a Paired Means Test

Let's compare students' SAT-Math scores to their SAT-Verbal scores.  

  1. Open the Minitab Express file:
  2. On a PC: In the menu bar select STATISTICS > Two Samples > Paired t
  3. On a Mac: In the menu bar select Statistics > 2-Sample Inference > Paired t
  4. Double click the variable SATM in the box on the left to insert the variable into the Sample 1 box
  5. Double click the variable SATV in the box on the left to insert the variable into the Sample 2 box
  6. Click OK

This should result in the following output:

Paired t: SATM, SATV
Descriptive Statistics
Sample N Mean StDev SE Mean
SATM 215 599.814 84.700 5.776
SATV 215 580.326 82.436 5.622
Estimation for Paired Difference
Mean StDev SE Mean 95% CI for \(\mu_d\)
19.488 89.808 6.125 (7.416, 31.561)

\(\mu_d\) : mean of (SATM - SATV)

Test
Null hypothesis H0: \(\mu_d\) = 0
Alternative hypothesis H1: \(\mu_d\) ≠ 0
T-Value P-Value
3.18 0.0017
Video Walkthrough

Select your operating system below to see a step-by-step guide for this example.

On the next page, the five-step hypothesis testing procedure is used to interpret this output.