The accompanying data represent the running times of files produced by two motion-picture companies. Assume that the running-time differences are approximately normally distributed. Construct a 90% confidence interval for 90% confidence interval for μ - μ were created, should it be assumed that o² = = If a Company | 106 96 105 Time (minutes) 91 99 II 101 78 123 89 171 89 120 Click here to view page 1 of the table of critical values of the F-distribution, for alpha = 0.05. Click here to view page 2 of the table of critical values of the F-distribution, for alpha = 0.05. The confidence interval is < (Round to three decimal places as needed.) Carefully review the properties of the confidence interval for the ratio of two variances. Then, examine the confidence interval found in the previous step carefully and determine if it could be assumed that o² = 22.
The accompanying data represent the running times of files produced by two motion-picture companies. Assume that the running-time differences are approximately normally distributed. Construct a 90% confidence interval for 90% confidence interval for μ - μ were created, should it be assumed that o² = = If a Company | 106 96 105 Time (minutes) 91 99 II 101 78 123 89 171 89 120 Click here to view page 1 of the table of critical values of the F-distribution, for alpha = 0.05. Click here to view page 2 of the table of critical values of the F-distribution, for alpha = 0.05. The confidence interval is < (Round to three decimal places as needed.) Carefully review the properties of the confidence interval for the ratio of two variances. Then, examine the confidence interval found in the previous step carefully and determine if it could be assumed that o² = 22.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:The accompanying data represent the running times of files produced by two motion-picture companies. Assume that
the running-time differences are approximately normally distributed. Construct a 90% confidence interval for
90% confidence interval for μ - μ were created, should it be assumed that o² =
=
If a
Company
|
106
96
105
Time (minutes)
91
99
II
101
78
123
89
171
89
120
Click here to view page 1 of the table of critical values of the F-distribution, for alpha = 0.05.
Click here to view page 2 of the table of critical values of the F-distribution, for alpha = 0.05.
The confidence interval is
<
(Round to three decimal places as needed.)
Transcribed Image Text:Carefully review the properties of the confidence interval for the ratio of two variances. Then, examine the
confidence interval found in the previous step carefully and determine if it could be assumed that o² = 22.
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