worst? (2 points) nlo tW hy yöü would dispute his claim. In which subject did he
ID: 3334969 • Letter: W
Question
worst? (2 points) nlo tW hy yöü would dispute his claim. In which subject did he do the best? The English 20.2 4.8 MathReading Science 21.2 5.1 23.3 6.1 20.8 5.0 7. As a researcher and a scholar, it is important to understand probability and the normal curve. What percentage of the area under the normal curve lies (2 points): Between the mean and a z-score of-1.5? Between z-scores of-1.0 and 0.9? Below a z of 1.75? Above a z of -0.5? The National Center for Health Statistics states that the population of college women has a mean height of 5 feet 5 inches with a standard deviation of 2.5 inches. Assume that this variable is normally distributed in the population to make the following predictions. For this problem you should convert all heights to inches (eg, 5 feet 5 inches would be 65 inches). (6 points) 8. a. What percentage of college women are 5 feet or shorter? @0 in b. An eccentric restaurant owner wants his waitresses to be 5 feet 10 inches or taller. toinr What percentage of college women would be eligible for these jobs? Kim states that she is so short that she is in the bottom 10% of women's heights. What height would she have to be to make this statement? Pete says that he will not date any woman who is taller than he. Pete's height is 5 feet 7 inches. What percent of college women are missing this opportunity? The middle 50% of college women are between what two heights? What height corresponds to the 90th percentile? c, d. e, f.Explanation / Answer
Answer 7
a.
0.4332
b.
0.6573
c.
0.9599
d.
0.6915
Ans 8
a.
0.0228
b.
0.0228
c.
61.796 inches
d.
0.2119
e.
63.315 and 66.685
f.
68.204
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