# Using the sign test, if (1) h1 is directional

Using the sign test, if (1) H1 is directional, (2) H0 is false, (3) = 0.01, and (4) N = 12, then the probability of making a Type I error equals ____.

0.0002

0.0010

0.0192

0

In a nondirectional alternative hypothesis, evaluating the probability of observing 7 pluses out of 8 events equals ____.

p(7) + p(8)

p(0) + p(8)

p(0) + p(1) + p(7) + p(8)

p(7)

Exhibit 10-2

Refer to the following hypothetical data collected using replicated measures design:

Subject

1

2

3

4

5

6

7

8

9

10

Pre

50

49

37

16

80

42

40

58

31

21

Post

56

50

30

25

90

44

60

71

32

22

Refer to Exhibit 10-2. In a two-tailed test of H0 using = 0.05, what is p(obtained) for the results shown?

0.1094

0.0108

0.0500

0.0216

In an experiment in which H1 is nondirectional, and the state of reality is such that the probability of a plus = 0.50, the probability of making a Type II error is ____.

0

1 alpha

1

need more information

If H1 is nondirectional and the size of the effect of the independent variable decreases, the probability of making a Type I error ____.

decreases

increases

need more information

equals zero

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