You wish to test the following claim (Ha) at a significance level of a = 0.005. For the context of this problem, ud = 42- 41 where the first data set represents a pre-test and the second data set represents a post-test. H.: Ha = 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 = 15 subjects. The average difference (post - pre) is d = 32.6 with a standard deviation of the differences of sa = 31.6. 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... O in the critical region O not in the critical region This test statistic leads to a decision to.... O reject the null accept the null O fail to reject the null

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You wish to test the following claim (H) at a significance level of a = 0.005. For the context of this
problem, Hd = H2 - H1 where the first data set represents a pre-test and the second data set
represents a post-test.
H.: Ha = 0
H.: Ha + 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 =
difference (post - pre) is d
15 subjects. The average
= 32.6 witha standard deviation of the differences of
31.6.
||
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...
O in the critical region
O not in the critical region
This test statistic leads to a decision to...
O reject the null
accept the null
O fail to reject the null
Transcribed Image Text:You wish to test the following claim (H) at a significance level of a = 0.005. For the context of this problem, Hd = H2 - H1 where the first data set represents a pre-test and the second data set represents a post-test. H.: Ha = 0 H.: Ha + 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 = difference (post - pre) is d 15 subjects. The average = 32.6 witha standard deviation of the differences of 31.6. || 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... O in the critical region O not in the critical region This test statistic leads to a decision to... O reject the null accept the null O fail to reject the null
As such, the final conclusion is that...
O There is sufficient evidence to warrant rejection of the claim that the mean difference of post-
test from pre-test is not equal to 0.
O There is not sufficient evidence to warrant rejection of the claim that the mean difference of
post-test from pre-test is not equal to 0.
O The sample data support the claim that the mean difference of post-test from pre-test is not
equal to 0.
O There is not sufficient sample evidence to support the claim that the mean difference of post-
test from pre-test is not equal to 0.
Transcribed Image Text:As such, the final conclusion is that... O There is sufficient evidence to warrant rejection of the claim that the mean difference of post- test from pre-test is not equal to 0. O There is not sufficient evidence to warrant rejection of the claim that the mean difference of post-test from pre-test is not equal to 0. O The sample data support the claim that the mean difference of post-test from pre-test is not equal to 0. O There is not sufficient sample evidence to support the claim that the mean difference of post- test from pre-test is not equal to 0.
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