DS123_Lab_1

DS123_Lab_1 - Question 3. Problem 8.13 z-score =-0.5...

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Brad Dorn Lab 1, DS 123 Set column width of C to 10 1/30/2008 Question 1. Problem 7.12 VALUES EQUATION USED a. 0.5 "=1-NORMDIST(84.57,84.57,10,TRUE) b. 0.97 "=NORMDIST(107.57,84.57,10,TRUE)-NORMDIST(64.5 c. 0.68 "=NORMDIST(94.57,84.57,10,TRUE)-NORMDIST(74.57 d. 0 "=1-NORMDIST(x,54.57,10,TRUE) Question 2. Problem 7.28 VALUES EQUATION USED a. 0.25 "=NORMDIST(80,84.57,10,TRUE)-NORMDIST(70,84.57 b. 0 "=NORMDIST(60,84.57,10,FALSE) c. 0.29 "=1-NORMDIST(90,84.57,10,TRUE)
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Unformatted text preview: Question 3. Problem 8.13 z-score =-0.5 probability= 0.31 Answer: Yes, the engineer's concern does appear to be justified because the probability of failure is more than 5% Question 4. Problem 8.28 a. Exp value = 0.17 b. St error 0.01 c. z-score = 1.2 probability = 0.88 d. 25% z-score = 3.2 probability = 1 15% z-score =-0.8 probability = 0.21 Answer = 0.79 57,84.57,10,TRUE) 7,84.57,10,TRUE) 7,10,TRUE)...
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DS123_Lab_1 - Question 3. Problem 8.13 z-score =-0.5...

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