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 H2 n 30 34 77.24 88.62 10.83 22.29 a. Use a 0.05 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? OA. Ho: H1 =H2 O B. Ho: H1 = H2 H,: H> H2 H: H H2 OC. Ho: H1 = H2 OD. Ho: H1 *H2

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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
42
30
34 -
77.24
88.62
10.83
22.29
a. Use a 0.05 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 A. Ho: H1 = H2
H4: H1 # H2
O B. Ho: H1 =H2
H1: H1>H2
O D. Ho: H1 # H2
OC. Ho: H1 = H2
H1: H1 <H2
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 42 30 34 - 77.24 88.62 10.83 22.29 a. Use a 0.05 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 A. Ho: H1 = H2 H4: H1 # H2 O B. Ho: H1 =H2 H1: H1>H2 O D. Ho: H1 # H2 OC. Ho: H1 = H2 H1: H1 <H2
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
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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