Question
In: Statistics and Probability
You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. For the...
You wish to test the following claim (HaHa) at a significance
level of α=0.005α=0.005. For the context of this problem,
μd=μ2−μ1μd=μ2-μ1 where the first data set represents a pre-test and
the second data set represents a post-test.
Ho:μd=0
Ha:μd<0
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
the following sample of data:
| pre-test | post-test |
|---|---|
| 52.1 | 30.9 |
| 53.3 | 34.3 |
| 43.4 | -12.1 |
| 46.8 | 41.3 |
| 54.5 | 6.7 |
| 38.9 | 23 |
| 58.3 | 38 |
| 51.7 | 31.4 |
| 69.5 | 60.6 |
What is the critical value for this test? (Report answer
accurate to three decimal places.)
critical value =
What is the test statistic for this sample? (Report answer accurate
to three decimal places.)
test statistic =
Solutions
orchestra answered 1 year agoRelated Solutions
You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. For the...
You wish to test the following claim (HaHa) at a significance
level of α=0.005α=0.005. For the context of this problem,
μd=μ2−μ1μd=μ2-μ1 where the first data set represents a pre-test and
the second data set represents a post-test.
Ho:μd=0Ho:μd=0
Ha:μd>0Ha:μd>0
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
the following sample of data:
pre-test
post-test
48.6
37.2
53
73.8
69.1
78.9
43.7
35.4
51.7
50.9
48.3
38.7
54.7
58.1...
You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. For the...
You wish to test the following claim (HaHa) at a significance
level of α=0.005α=0.005. For the context of this problem,
μd=μ2−μ1μd=μ2-μ1 where the first data set represents a pre-test and
the second data set represents a post-test.
Ho:μd=0Ho:μd=0
Ha:μd≠0Ha:μd≠0
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
the following sample of data:
pre-test
post-test
49.9
43.5
44.4
44
54.6
55.7
43.5
40.1
56.9
52.7
52.7
39.2
44.9
35.7...
You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. For the...
You wish to test the following claim (HaHa) at a significance
level of α=0.005α=0.005. For the context of this problem,
μd=PostTest−PreTestμd=PostTest-PreTest one data set represents a
pre-test and the other data set represents a post-test. Each row
represents the pre and post test scores for an individual.
Ho:μd=0Ho:μd=0
Ha:μd≠0Ha:μd≠0
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
the following sample of data:
pre-test
post-test
63.4
104.2
65.8
90...
You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. For the...
You wish to test the following claim (HaHa) at a significance
level of α=0.005α=0.005. For the context of this problem,
μd=μ2−μ1μd=μ2-μ1 where the first data set represents a pre-test and
the second data set represents a post-test.
Ho:μd=0Ho:μd=0
Ha:μd>0Ha:μd>0
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
pre-test and post-test samples for n=264n=264 subjects. The average
difference (post - pre) is ¯d=3.6d¯=3.6 with a standard deviation
of the...
1. You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. Ho:p1≥p2Ho:p1≥p2...
1. You wish to test the following claim (HaHa) at a significance
level of α=0.005α=0.005.
Ho:p1≥p2Ho:p1≥p2
Ha:p1<p2Ha:p1<p2
You obtain 457 successes in a sample of size n1=557n1=557 from the
first population. You obtain 252 successes in a sample of size
n2=297n2=297 from the second population.
critical value =
[three decimal accuracy]
test statistic =
[three decimal accuracy]
The test statistic is...
in the critical region
not in the critical region
This test statistic leads to a decision to...
reject the...
You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1≠μ2Ha:μ1≠μ2...
You wish to test the following claim (HaHa) at a significance
level of α=0.005α=0.005.
Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1≠μ2Ha:μ1≠μ2
You obtain the following two samples of data.
sample 1
66.9
49.9
58.3
61.6
29.4
78
40.8
43.1
56.4
61.1
85.3
68.4
70
58.8
53
78
51.5
55.9
43.1
45.8
16.7
76.6
60.7
91
63.5
65.4
64.5
62.5
92.9
46.4
58.8
71.7
70
103.7
55.9
69.5
61.6
83.1
60.7
79.6
85.3
72.2
59.3
63
81.3
Sample 2
52.9
59.8
47.2
80.7
68.4
49.8
25.6...
You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. Ho:μ=73.7Ho:μ=73.7 Ha:μ≠73.7Ha:μ≠73.7...
You wish to test the following claim (HaHa) at a significance
level of α=0.005α=0.005.
Ho:μ=73.7Ho:μ=73.7
Ha:μ≠73.7Ha:μ≠73.7
You believe the population is normally distributed and you know the
standard deviation is σ=15.8σ=15.8. You obtain a sample mean of
M=67.7M=67.7 for a sample of size n=44n=44.
What is the critical value for this test? (Report answer accurate
to three decimal places.)
critical value = ±±
What is the test statistic for this sample? (Report answer accurate
to three decimal places.)
test statistic...
You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1<μ2Ha:μ1<μ2...
You wish to test the following claim (HaHa) at a significance
level of α=0.005α=0.005.
Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1<μ2Ha:μ1<μ2
You believe both populations are normally distributed, but you
do not know the standard deviations for either. And you have no
reason to believe the variances of the two populations are equal
You obtain a sample of size n1=10n1=10 with a mean of
¯x1=70.4x¯1=70.4 and a standard deviation of s1=5.5s1=5.5 from the
first population. You obtain a sample of size n2=13n2=13 with a
mean...
You wish to test the following claim (HaHa) at a significance level of α=0.005 Ho:μ1=μ2 Ha:μ1≠μ2...
You wish to test the following claim (HaHa) at a significance
level of α=0.005
Ho:μ1=μ2
Ha:μ1≠μ2
You believe both populations are normally distributed, but you
do not know the standard deviations for either. And you have no
reason to believe the variances of the two populations are equal
You obtain a sample of size n1=12 with a mean of ¯x1=76.2x and a
standard deviation of s1=14.6 from the first population. You obtain
a sample of size n2=25 with a mean...
You wish to test the following claim (Ha) at a significance level of α=0.005.
You wish to test the following claim (Ha) at a significance
level of α=0.005.
Ho:μ1=μ2
Ha:μ1>μ2
You believe both populations are normally distributed, but you do
not know the standard deviations for either. However, you also have
no reason to believe the variances of the two populations are not
equal. You obtain a sample of size n1=15 with a mean of M1=88.3 and
a standard deviation of SD1=7.1 from the first population. You
obtain a sample of size n2=27 with...
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