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Question 20 options: The time a student sleeps per night has a distribution with mean 5.9 hours and a standard deviation of 0.4 hours. Find

Question 20 options:

The time a student sleeps per night has a distribution with mean 5.9 hours and a standard deviation of 0.4 hours. Find the probability that average sleeping time for a randomly selected sample of 48 students is more than 6 hours per night. Answer: (round to 4 decimal places)

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