Reference no: EM131974928

Use the information below to answer Questions Q1 and Q2.

The following information was obtained from matched samples. The daily production rates for a sample of workers before and after an information systems training session are shown below.

Worker Before After

1 20 22

2 25 23

3 27 27

4 23 20

5 22 25

6 20 19

7 17 18

Q1. Using the information above, the point estimate for the difference between the means of the two populations is:

a) -1

b) -2

c) 0

d) 1

Q2. Using the information above and the answer to Question 18, the correct statistical decision for a hypothesis test that the difference between the means of the two populations is equal to zero is:

a) The null hypothesis should be rejected.

b) The null hypothesis should not be rejected.

c) The alternative hypothesis should not be rejected.

d) None of the above