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11. When women were allowed to become pilots, engineers needed to redesign the injection seats since...

11. When women were allowed to become pilots, engineers needed to redesign the injection seats since they were designed for men. They were designed for men weighing between 140 lb and 211 lb. Weights of women are normally distributed with a mean of 135 lb, and a standard deviation of 25.6 lb. (For full credit need to draw the curve and shade the area)

a) If a women is randomly selected, find the probability of her weight is less than 163 lb.

b) If 16 women are randomly selected, find the probability of her weight being between 163 lb. and 190 lb.

Math   Statistics-And-Probability   
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