_9. An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with u = 15.5 and o = 3.6. What is the probability that during a given week the airline will lose less than 20 suitcases? a. 0.8944 b. 0.4040 c. 0.3944 d. 0.1056 _10. Assume that the heights of American men are normally distributed with a mean of 69.0 inches and a standard deviation of 2.8 inches. The U.S. Marine Corps requires that men have heights between 64 and 78 inches. Find the percent of men meeting these height requirements. 62 a. 96.26% b. 31.12% c. 99.93% d. 3.67%

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Statistics : Areas under normal curve and its application 

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9. An airline knows from experience that the distribution of the number of suitcases that get lost each week
on a certain route is approximately normal with u = 15.5 and o = 3.6. What is the probability that during a given
week the airline will lose less than 20 suitcases?
a. 0.8944
b. 0.4040
c. 0.3944
d. 0.1056
10. Assume that the heights of American men are normally distributed with a mean of 69.0 inches and a
standard deviation of 2.8 inches. The U.S. Marine Corps requires that men have heights between 64 and 78 inches.
Find the percent of men meeting these height requirements. 62
a. 96.26%
b. 31.12%
c. 99.93%
d. 3.67%
Transcribed Image Text:9. An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with u = 15.5 and o = 3.6. What is the probability that during a given week the airline will lose less than 20 suitcases? a. 0.8944 b. 0.4040 c. 0.3944 d. 0.1056 10. Assume that the heights of American men are normally distributed with a mean of 69.0 inches and a standard deviation of 2.8 inches. The U.S. Marine Corps requires that men have heights between 64 and 78 inches. Find the percent of men meeting these height requirements. 62 a. 96.26% b. 31.12% c. 99.93% d. 3.67%
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