A survey of 68 courses delivered fully online found a mean


A survey of 68 courses delivered fully online found a mean of 13.5 videos with a standard deviation of 2.81. You can assume that the number of videos in an online course is normally distributed. Find the 89% confidence interval for the mean number of videos in a fully online course.

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Basic Statistics: A survey of 68 courses delivered fully online found a mean
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