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22. In testing the null hypothesis H0: μ1  -   μ 2 = 0, the computed test statistic is...

22. In testing the null hypothesis H0: μ1  -   μ 2 = 0, the computed test statistic is z = -1.66. The corresponding p-value is ​

a.

​.9515.
b.

​.0485.
c.

​.9030.
d.

​.0970.

15. The level of significance  α

a.

is (1 - confidence coefficient).
b.

is always a negative value.
c.

can be any positive value.
d.

can be any value between -1.96 to 1.96.

10. The following information was obtained from matched samples.

The daily production rates for a sample of workers before and after a training program 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

The p-value of the test statistic is

a.

0.5
b.

0.05
c.

0.10
d.

0.01
Math   Statistics-And-Probability   
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