The running time for videos submitted to YouTube in a given week is normally distributed with
Question:
The running time for videos submitted to YouTube in a given week is normally distributed with μ = 390 seconds and standard deviation σ = 148 seconds.
a. If a single video is randomly selected, what is the probability that the running time of the video exceeds 6 minutes
(360 seconds)?
b. Suppose that a sample of 40 videos is selected. What is the probability that the mean running time of the sample exceeds 6 minutes?
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