Assume that military aircraft use ejection seats designed for men weighing between
134
lb and
200
lb. If women's weights are normally distributed with a mean of
164.6
lb and a standard deviation of
48.2
lb, what percentage of women have weights that are within those limits? Are many women excluded with those specifications?
P(134 < X < 200)
= P((134 - 164.6)/48.2 < z < (200 - 164.6)/48.2)
= P(-0.63 < z < 0.73)
= P(z < 0.73) - P(z < -0.63)
= 0.7673 - 0.2643
= 0.503
Hence 50.3% of women are within the limit and 49.7% excluded
with those specifications.
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