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**Unformatted text preview: **inches. B) P(66<X<72)=? = P(66-Ux/Ox< X-Ux/Ox < 72-Ux/Ox) = P(66-69.6/3.0 < Z < 72-69.6/3.0) = P(-3.6/3.0 < Z < 2.4/3.0) =P(-1.20 < Z < 0.80) = P(Z < 0.80) – P(Z < -1.20) +0.8=+0.8+0.00 = 0.7881 – 0.1151 = 0.6730 There is a 0.673 probability that the height of the randomly selected guy goes between 66 and 72 inches C) P(X>72)=? P(X-Ux/Ox > 72-Ux/Ox) P(Z>72-69.6/3.0 P(Z>2.4/3.0) P(Z>0.80) =1- the unshaded area = 1-P(Z<0.80) = 1-0.7881 = 0.2119 There is a 0.2119 probability that the height of a randomly selected guy is over 72 inches. A)0.1151 B)0.673 C)0.2119...

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- Fall '10
- Zhang
- Business, Standard Deviation, randomly selected guy, randomly picked guy