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. ProctoredNonproctored P2 30 n 78.42 33 82.63 11.27 22.36 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? OB. Hg: H1 "H2 H: 2 OA Ho: H* 2 OC. Ho: H1 =P2 H: > H2 OD. Ho: H1 "H2 H: H H2
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. ProctoredNonproctored P2 30 n 78.42 33 82.63 11.27 22.36 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? OB. Hg: H1 "H2 H: 2 OA Ho: H* 2 OC. Ho: H1 =P2 H: > H2 OD. Ho: H1 "H2 H: H H2
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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
H1
H2
33
30
78.42
82.63
11.27
22.36
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. Ho: H1 =H2
O A. Ho: H1 #H2
H4:Hy <H2
O D. Ho: H1 = H2
OC. Ho: H1 =H2
H4:Hq> H2
H,:H1<H2

Transcribed Image Text:B.) Test statistic (rounded to 3 decimals)
C.) P-Value (rounded to 3 decimals)
D.) State the conclusion
E.) Construct a confidence interval suitable for testing
F.) Does the confidence interval support the claim
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