Proctored Nonproctorec 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. H2 32 34 x 78.74 11.87 88.27 21.32 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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
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Author:Carter
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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
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|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
32
78.74
88.27
11.87
21.32
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 A. Ho: H1 H2
H1: H1 <H2
OC. Họ: H1 = H2
O B. Ho: H1 = H2
H1: H1> H2
O D. Ho: H1 = H2
H1: 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.)
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 32 78.74 88.27 11.87 21.32 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 A. Ho: H1 H2 H1: H1 <H2 OC. Họ: H1 = H2 O B. Ho: H1 = H2 H1: H1> H2 O D. Ho: H1 = H2 H1: 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.)
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