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Unformatted text preview: d. 208.5 Norm.Inv at 1% confdence level 6.) 7.1 a. 0.0015 Z(95): 2.96 b. 0.0679 Z(97.5):1.48 c. 0.0968 Z(102.2): 1.30 d. 99.348 Z value: 0.39 7.) 7.5 a. The sampling distribu±on of themean is the distribu±on of all possible means if we select all possible sample of a given size. b. 0.0228 Z(2.61): 2.00 c. 0.6826 Z(2.64): 1.00 , Z(2.62): 1.00 d. 2.638 and 2.6216 Z(80%): 0.84 , Z(20%): 0.84 8.) 7.7 a. 0.3830 Z(7.8): 0.50 , Z(8.2): 0.50 Julio C Lopez MAST 6201 4/2/2016 b. 0.3944 Z(7.5): 1.25 , Z(8): 0.00 c. 0.6826 Z(80%): 0.84 , Z(20%): 0.84 d. We can see that the Pr of the sample mean being between 7.8 and 8.2 is higher with 100 sessions than with 25 sessions because with the increasing number of sessions the sample mean distribuTon narrows around the mean. ±hus, the probability is larger for more sessions....
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 Spring '16
 Edward Fox
 Statistics, Normal Distribution, Homework, 10%, 1%, 20%, 80%, 2.5%

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