Question

You wish to test the following claim ( H a ) at a significance level of α = 0.10 . For the context of this problem, μ d = μ 2 − μ 1 where the first data set represents a pre-test and the second data set represents a post-test. H o : μ d = 0 H a : μ d < 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 69.3 43.4 45.7 32.4 57 18.1 50.8 16.7 46.5 23.7 56.2 14.3 61.8 31.3 54.7 8 49.6 41.8 53.9 34.6 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 = The test statistic is... in the critical region not in the critical region This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the mean difference of post-test from pre-test is less than 0. There is not sufficient evidence to warrant rejection of the claim that the mean difference of post-test from pre-test is less than 0. The sample data support the claim that the mean difference of post-test from pre-test is less than 0. There is not sufficient sample evidence to support the claim that the mean difference of post-test from pre-test is less than 0.

Answer #1

You wish to test the following claim ( H a ) at a significance
level of α = 0.005 . For the context of this problem, μ d = μ 2 − μ
1 where the first data set represents a pre-test and the second
data set represents a post-test. H o : μ d = 0 H a : μ d > 0 You
believe the population of difference scores is normally
distributed, but you do not know the...

You wish to test the following claim ( H a ) at a significance
level of α = 0.01 . For the context of this problem, μ d = μ 2 − μ
1 where the first data set represents a pre-test and the second
data set represents a post-test. H o : μ d = 0 H a : μ d ≠ 0 You
believe the population of difference scores is normally
distributed, but you do not know the...

You wish to test the following claim ( H a ) at a significance
level of α = 0.02 . For the context of this problem, μ d = μ 2 − μ
1 where the first data set represents a pre-test and the second
data set represents a post-test.
H o : μ d = 0
H a : μ d < 0
You believe the population of difference scores is normally
distributed, but you do not know the...

You wish to test the following claim ( H a Ha ) at a
significance level of α = 0.001 α=0.001 . For the context of this
problem, μ d = μ 2 − μ 1 μd=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...

You wish to test the following claim (Ha) at a significance
level of α=0.005. For the context of this problem, μd=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
pre-test and post-test samples for n=19 subjects. The average
difference (post - pre) is ¯d=21.6 with a standard deviation...

You wish to test the following claim (HaHa) at a significance
level of α=0.001α=0.001. 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=25n=25 subjects. The average
difference (post - pre) is ¯d=−22.8d¯=-22.8 with a standard
deviation of the...

You wish to test the following claim ( H a ) at a significance
level of α = 0.02 . For the context of this problem, d = x 2 − x 1
where the first data set represents a pre-test and the second data
set represents a post-test. H o : μ d = 0 H a : μ d ≠ 0 You believe
the population of difference scores is normally distributed, but
you do not know the standard...

You wish to test the following claim (HAHA) at a significance
level of α=0.01α=0.01. For the context of this problem,
μd=μ2−μ1μd=μ2-μ1 where the first data set represents pre-strike
production and the second data set represents post-strike
production.
Ho:μd=0Ho:μd=0
HA:μd<0HA:μd<0
You believe the population difference of production is normally
distributed, but you do not know the standard deviation. You obtain
pre-strike and post-strike production samples for n=6n=6 subjects.
The average difference (post - pre) is ¯d=−47.4d¯=-47.4 with a
standard deviation of...

You wish to test the following claim ( H a ) at a significance
level of α = 0.02 . For the context of this problem, μ d = P o s t
T e s t − P r e T e s t where the first data set represents a
pre-test and the second data set represents a post-test. (Each row
represents the pre and post test scores for an individual. Be
careful when you enter your data...

You wish to test the following claim (HaHa) at a significance
level of α=0.01α=0.01. 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=12n=12 subjects. The average
difference (post - pre) is ¯d=7.1d¯=7.1 with a standard deviation
of the...

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