Answered: Time Row Total 23 44 58 11 136…

Name: Professor Fair believes that extra time does not improve grades on exa
Uploaded: 2024-03-20T07:06:27.000Z
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Description: Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had exactly 1 hour in which to finish the test, and the other group could

Mathematics For Machine Technology

8th Edition

ISBN:9781337798310

Author:Peterson, John.

Publisher:Peterson, John.

Chapter86: Bcd (binary Coded Decimal) Numeration Systems

Section: Chapter Questions

Problem 32A

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Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had exactly 1 hour in which to finish the test, and the other group could stay as long as desired. The results are shown in the following table. Test at the 0.01 level of significance that time to complete a test and test results are independent.

(ii) Find the sample test statistic. (Round your answer to two decimal places.)

(iii) Find or estimate the P-value of the sample test statistic.

a) P-value > 0.100

b) 0.050 < P-value < 0.100

c) 0.025 < P-value < 0.050

d)0.010 < P-value < 0.025

e) 0.005 < P-value < 0.010

f) P-value < 0.005

Time
Row Total
23
44
58
11
136
Unlimited
18
48
82
16
164
Column Total
92
140
27
300

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