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The length of country and western songs is normally distributed and has a mean of 200 seconds and a standard deviation of 30 se...Asked by giovanny
The length of country and western songs is normally distributed and has a mean of 200 seconds and a standard deviation of 30 seconds. Find the probability that a random selection of 9 songs will have mean length of 186.30 seconds or less. Assume the distribution of the lengths of the songs is normal
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