Suppose the amount of time college students sleep per night follows a normal distribution with mean...
Suppose the amount of time college students sleep per night follows a normal distribution with mean 8 hours and standard deviation 0.75 hours. Let Y denote the amount of time a randomly selected student sleeps per night.
What is P(7 < Y <9)? Round to 4 decimal places.
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Suppose the amount of time college students sleep per night
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