File Home Insert Draw Formulas Data Review View E270 HW3 SP21 - Unsaved Priso, Rebecca Anne Georges 8 52 B I U ab A A 123 ? Sensitivity fx A B C D E F G H I J K L M N O P Q R S d -1.70 1.70 88 89 90 Question 8-11 are related to the following: 91 Let x be a normally distributed random variable with a mean of 30 and a standard deviation of 16. 92 8 What fraction of the distribution is below 0? 93 a 0.0304 94 b 0.0262 95 c 0.0226 96 d 0.0195 97 98 9 What fraction of the distribution is between 4 and 20? 99 a 0.2847 100 b 0.2588 101 c 0.2353 102 d 0.2139 103 104 10 What fraction of the distribution is above 55? 105 a 0.0715 106 b 0.0591 107 c 0.0488 108 d 0.0404 109 110 11 What value of the x axis marks the top 25% of the distribution? 111 a 40.8 112 b 38.8 113 c 37.0 114 d 35.2 115 116 Questions 12-14 are related to the following: 117 Let x be a normally distributed random variable with a mean of 125.6 and a standard deviation of 22.8. + E270 HW3
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For question 92, x = 0, μ = 30, and σ = 16. Plugging these values into the formula, we get z = (0 - 30) / 16 = -1.875. For question 98, x = 4, μ = 30, and σ = 16. Plugging these values into the formula, we get z = (4 - 30) / 16 = -1.625. For question 99, x = Show more…
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