The accompanying table shows two samples that were collected as matched pairs.

Pair Sample 1 Sample 2

1 8 3

2 3 4

3 6 7

4 11 8

5 9 3

6 6 6

7 8 3

8 6 5

a. The null and alternative hypotheses to test if the population represented by Sample 1 has a mean that is 2.0 units higher than the population represented by Sample 2. Let _d be the population mean ofmatched-pair differences for Sample 1 minus Sample 2. Solve B.

H₀: _d2.0

H₁: _d>2.0

b. The test statistic is =0.25

The criticalvalue(s) is=?

(Use a comma to separate answers as needed. Round to two decimal places asneeded.)