(Steps Shown) Times of Videos. A film editor feels that the standard deviation for the number of minutes in a video is 3.4 minutes. A sample of 24 videos has
Question: Times of Videos. A film editor feels that the standard deviation for the number of minutes in a video is 3.4 minutes. A sample of 24 videos has a standard deviation of 4.2 minutes. At a = 0.05, is the sample standard deviation different from what the editor hypothesized?
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