The following data represent the running times of lms
Chapter 1, Problem 9.46(choose chapter or problem)
The following data represent the running times of lms produced by two motion-picture companies. Company Time (minutes) I 103 94 110 87 98 II 97 82 123 92 175 88 118Compute a 90% condence interval for the dierence between the average running times of lms produced by the two companies. Assume that the running-time differences are approximately normally distributed with unequal variances.
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