Proctored Nonproctored A study was done on proctored and nonproctored tests. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. H1 H2 34 33 In 77.68 84.85 11.09 21.89 a. Use a 0.01 significance level, and test the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. |. (Round to two decimal places as needed.) The test statistic, t, is (Round to three decimal places as needed.) The P-value is State the conclusion for the test. O A. Reject Ho. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. O B. Reject Ho. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. OC. Fail to reject Ho. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. O D. Fail to reject Ho. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. b. Construct a confidence interval suitable for testing the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. (Round to three decimal places as needed.) Does the confidence interval support the conclusion of the test? V because the confidence interval contains
Proctored Nonproctored A study was done on proctored and nonproctored tests. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. H1 H2 34 33 In 77.68 84.85 11.09 21.89 a. Use a 0.01 significance level, and test the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. |. (Round to two decimal places as needed.) The test statistic, t, is (Round to three decimal places as needed.) The P-value is State the conclusion for the test. O A. Reject Ho. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. O B. Reject Ho. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. OC. Fail to reject Ho. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. O D. Fail to reject Ho. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. b. Construct a confidence interval suitable for testing the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. (Round to three decimal places as needed.) Does the confidence interval support the conclusion of the test? V because the confidence interval contains
MATLAB: An Introduction with Applications
6th Edition
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Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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Transcribed Image Text:Proctored Nonproctored
A study was done on proctored and nonproctored tests. The results are shown in the table. Assume
that the two samples are independent simple random samples selected from normally distributed
populations, and do not assume that the population standard deviations are equal. Complete parts
(a) and (b) below.
H1
H2
34
33
In
77.68
84.85
11.09
21.89
a. Use a 0.01 significance level, and test the claim that students taking nonproctored tests get a higher mean score than those
taking proctored tests.
|. (Round to two decimal places as needed.)
The test statistic, t, is
(Round to three decimal places as needed.)
The P-value is
State the conclusion for the test.
O A. Reject Ho. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean
score than those taking proctored tests.
O B. Reject Ho. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher
mean score than those taking proctored tests.
OC. Fail to reject Ho. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher
mean score than those taking proctored tests.
O D. Fail to reject Ho. There is not sufficient evidence to support the claim that students taking nonproctored tests get a
higher mean score than those taking proctored tests.
b. Construct a confidence interval suitable for testing the claim that students taking nonproctored tests get a higher mean
score than those taking proctored tests.
(Round to three decimal places as needed.)
Does the confidence interval support the conclusion of the test?
V because the confidence interval contains
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