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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