Leo N.

asked • 04/24/21

Solve using R Script to compute a 90% confidence interval for the difference between the average running times of films produced by the two companies

Please solve using R Script and show all coding/steps. Thanks in advance!


The following data represent the running times of films produced by two motion-picture companies.


There are 2 companies, A and B.

Company A's Time (minutes) is 103, 94, 110, 87, 98

Company B's Time (minutes) is 97, 82, 123, 92, 175, 88, 118


Construct a 90% confidence interval for σ2 A / σ2B .

Assume that the running-time differences are approximately normally distributed with unequal variances.

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