The typical amount of sleep per night for undergraduate college students has an approximately normal distribution...
The typical amount of sleep per night for undergraduate college students has an approximately normal distribution with a mean of 7 and a standard deviation of 2.10 hours. Based on this distributional information we can conclude that about 99.7 % of this population sleep between ____ and _____hours per night.
Homework Answers
According to empirical rule,
Approximately 99.7% of the data falls in 3 standard deviation of the mean.
That is between mean - 3 SD and mean + 3 SD
Between 7 - 3 * 2.10 and 7 + 3 * 2.10
Between 0.7 and 13.3
We can conclude that about 99.7% of this population sleep between 0.7 and 13.3 hours per night.
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