(a) Compute the test statistic. (Round your answer to three decimal places.) 0.394 (b) Using a 0.05 and the p-value approach, test to see if taking the course actually increased scores on the driving exam. Calculate the p-value. (Round your answer to four decimal places.) p-value = 0.1753

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 8PPS
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In order to determine whether or not a driver's education course improves the scores on a driving exam, a sample of 6 drivers were given the exam before and after taking the course. The results are
shown below. Assume the population of differences is normally distributed.
Score Before
Driver
the Course
Score After
the Course
1
83
87
2
89
88
3
94
91
4
78
77
5
87
93
6
79
83
Let d = Score After-Score Before.
(a) Compute the test statistic. (Round your answer to three decimal places.)
0.394
(b) Using a = 0.05 and the p-value approach, test to see if taking the course actually increased scores on the driving exam.
Calculate the p-value. (Round your answer to four decimal places.)
p-value = 0.1753
Transcribed Image Text:You may need to use the appropriate technology to answer this question. In order to determine whether or not a driver's education course improves the scores on a driving exam, a sample of 6 drivers were given the exam before and after taking the course. The results are shown below. Assume the population of differences is normally distributed. Score Before Driver the Course Score After the Course 1 83 87 2 89 88 3 94 91 4 78 77 5 87 93 6 79 83 Let d = Score After-Score Before. (a) Compute the test statistic. (Round your answer to three decimal places.) 0.394 (b) Using a = 0.05 and the p-value approach, test to see if taking the course actually increased scores on the driving exam. Calculate the p-value. (Round your answer to four decimal places.) p-value = 0.1753
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