A group of staff from KEMRI wanted to test a new anti-hunger weight loss pill. They had 10 people rate their hunger both before and after taking the pill. Does the pill do anything? (Use\( \alpha \ = 0.05)

Before After

9 8

9 6

9 1

9 1

2 8

4 9

5 7

9 4

6 3

a) give the test critical value

(hint: use alpha/2)

b) give the test statistic in 2 decimal places