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1. Open the Microsoft Excel data file.
If your data is still in a text file, refer to the instructions
on how to convert text files to Excel files.
2. On the menu bar, click on `Tools' and select `Data Analysis'. Choose
'T-test:Paired two sample for means' and click `OK'.
A new window will appear.
3. Enter the appropriate cell ranges of your first variable on
the Variable 1 range. Enter the appropriate cell ranges of your
second variable on the Variable 2 range.
If the first row contains variable names,
click on `labels in 1st row'.
4. Input the hypothesized mean difference (
and the desired alpha level ().