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) ProctoredNonproctored and (b) below n 32 E 76.53 S 10.78 35 83.14 18.67 a. Use a0.01 significance level to test the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. What are the null and altenative hypotheses? OA Ho P=P: OB. Hg: P =2 OC. H PP2 OD. Ho: P "P2 H P2 The test statistic, t is (Round to two decimal places as needed.) The P-value isO (Round to three decimal places as needed) State the conclusion for the test OA. Fail to reject Hg. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. OB. Reject Hg. There is not suficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. OC. Fail to reject Hg. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. OD. Reject Hg. There is suficient 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 two decimal places as needed.) Does the confidence interval support the conclusion of the test? v because the confidence interval contains
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) ProctoredNonproctored and (b) below n 32 E 76.53 S 10.78 35 83.14 18.67 a. Use a0.01 significance level to test the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. What are the null and altenative hypotheses? OA Ho P=P: OB. Hg: P =2 OC. H PP2 OD. Ho: P "P2 H P2 The test statistic, t is (Round to two decimal places as needed.) The P-value isO (Round to three decimal places as needed) State the conclusion for the test OA. Fail to reject Hg. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. OB. Reject Hg. There is not suficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. OC. Fail to reject Hg. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. OD. Reject Hg. There is suficient 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 two 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
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Transcribed Image Text: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.
Proctored Nonproctored
32
76.53
10.78
n
35
83.14
18.67
a. Use a 0.01 significance level to test the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests.
What are the null and alternative hypotheses?
O B. Hg: H1 = H2
H: H > H2
O A. Ho: H1 = H2
H;: H1 # H2
O C. Hg: H1 #H2
H;: H1 <H2
O D. Ho: H1 =H2
H1: H1 <H2
The test statistic, t, is
(Round to two decimal places as needed.)
The P-value is |. (Round to three decimal places as needed.)
State the conclusion for the test.
O A. Fail to reject Hn. 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 Hn. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests.
O C. Fail to reject Hn. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests.
O D. Reject Hn. There is 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 two decimal places as needed.)
Does the confidence interval support the conclusion of the test?
V because the confidence interval contains
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