The following two samples were collected as matched pairs:

Pair	1	2	3	4	5	6	7
sample 1	8	4	9.2	8.4	9	7	3.8
sample 2	7.5	4.6	6	6	1	8	6.0

Calculate the test statistic to test if a difference in means is 5 between the populations represented by Samples 1 and 2.

Use Excel to calculate d and Sd.

Round your answer to two decimal places, and include the zero and the MINUS sign before the decimal place if needed. E.g.,0.12