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2.) The amount of sleep that elementary school children get per night follows a Normal distribution with a
mean of 9.5 hours and a standard deviation of 0.55 hours.
a.) Find the proportion of elementary school children who get between 9 and 10 hours of sleep per
night. Sketch the Normal curve and shade the area under the curve that is the answer to the
question.

2 The amount of sleep that elementary school children get per night follows a Normal distribution with a mean of 95 hours and a standard deviation of 055 hours class=


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