1. COMPARISON OF MEANS QUESTION #10c
Use Excel to perform a paired samples t-test to evaluate whether or not the mean Motivation level is significantly different from mean Commitment level in the population.
The null hypothesis is: µ1 = µ2
The alternative hypothesis is: µ1 ≠ µ2
Test at alpha level of 0.01

2. STEP 1 Copy or Type table into an Excel Worksheet
State the Null and Alternative Hypotheses
Ho: µ1 = µ2, The sample mean motivation level is equal to the sample mean commitment level.
Ha: µ1 ≠ µ2, The sample mean motivation level is significantly different from the sample mean commitment level.

3. STEP 2 Perform Paired Samples t-Test in Excel
In Excel Worksheet, click on “Data” tab on title bar
Click on “Data Analysis” located far-right on ribbon bar
Data Analysis window opens
Highlight “t-Test: Paired Two Sample for Means”
Click “Ok”

4. EXAMPLE WORKSHEET

5. STEP 3 t-Test: Paired Two Sample for Means Window Opens
Enter Input by clicking on the field box for the “Variable 1 Range”
Highlight the “Motivation” column, including the title in table, this inserts the range in field box
Click on the field box for the “Variable 2 Range”
Highlight the “Commitment” column, including the title in table, this inserts the range in field box

6. STEP 4 t-Test: Paired Two Sample for Means Window
Enter “0” in the Hypothesized Mean Difference: field box
Check the Labels box by clicking in it
Enter “0.01” in the Alpha: field box
STEP 4

7. STEP 5 t-Test: Paired Two Sample for Means Window
To enter output on current worksheet – under Output Options, click in the circle in front of “Output Range”
Click in the Output Range field box
Click on a cell in current worksheet where the results are to be displayed
Click Ok
STEP 5

8. Example t-Test: Paired Two Sample for Means Window

9. Results Window

10. STEP 6 State the Conclusion
Since the absolute value of the t-statistic is less than the t-Critical two-tail value and the P (T<=t) two-tail value is greater than alpha of 0.01, we do not reject the null hypothesis.
2.731 < and > 0.010
The sample mean motivational level is not significantly different from the sample mean commitment level in the population.
STEP 6

11. EXAMPLE WORKSHEET