The following data represent the running times of films produced by two motion-picture companies. Test the hypothesis that the average running time of films produced by company 2 exceeds the average running time of films produced by company 1 by 12 minutes against the one-sided alternative that the difference is less than 12 minutes. Use a 0.05 level of significance and assume the distributions of times to be approximately normal with unequal variances. Company Time (minutes) 1 106 90 99 105 83 2 78 155 90 140 84 82 116

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The following data represent the running times of films produced by two motion-picture companies. Test the hypothesis that the average running time of films produced by company 2 exceeds the
average running time of films produced by company 1 by 12 minutes against the one-sided alternative that the difference is less than 12 minutes. Use a 0.05 level of significance and assume the
distributions of times to be approximately normal with unequal variances.
Company
Time (minutes)
1
106
90
99
105
83
2
78
155
90
140
84
82 116
Transcribed Image Text:The following data represent the running times of films produced by two motion-picture companies. Test the hypothesis that the average running time of films produced by company 2 exceeds the average running time of films produced by company 1 by 12 minutes against the one-sided alternative that the difference is less than 12 minutes. Use a 0.05 level of significance and assume the distributions of times to be approximately normal with unequal variances. Company Time (minutes) 1 106 90 99 105 83 2 78 155 90 140 84 82 116
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