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(1 point) Suppose that X is normally distributed with mean 90 and standard deviation 14. A. What is the probability that X is greater than 109.46? Probability = B. What value of X does only the top 18% exceed? X =

(1 point) Suppose that X is normally distributed with mean 90 and standard deviation 14. A. What is the probability that X is greater than 109.46? Probability = B. What value of X does only the top 18% exceed? X =

Practical Management Science
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Normal Distribution Tech: Problem 9 Previous Problem Problem List Next Problem (1 point) Suppose that X is normally distributed with mean 90 and standard deviation 14. A. What is the probability that X is greater than 109.46? Probability = B. What value of X does only the top 18% exceed? X = %3D Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 1 time. Your overall recorded score is 0%. You have unlimited attempts remaining.
Transcribed Image Text:Normal Distribution Tech: Problem 9 Previous Problem Problem List Next Problem (1 point) Suppose that X is normally distributed with mean 90 and standard deviation 14. A. What is the probability that X is greater than 109.46? Probability = B. What value of X does only the top 18% exceed? X = %3D Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 1 time. Your overall recorded score is 0%. You have unlimited attempts remaining.
Previous Problem Problem List Next Problem (1 point) Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. The students kept track of many lifestyle variables including how many hours of sleep obtained on a typical day. Researchers found that visually impaired students averaged 9.2 hours of sleep, with a standard deviation of 2.24 hours. Assume that the number of hours of sleep for these visually impaired students is normally distributed. (a) What is the probability that a visually impaired student gets less than 6.4 hours of sleep? answer: (b) What is the probability that a visually impaired student gets between 6.2 and 8.84 hours of sleep? answer: (c) Thirty percent of students get less than how many hours of sleep on a typical day? answer: hours Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining.
Transcribed Image Text:Previous Problem Problem List Next Problem (1 point) Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. The students kept track of many lifestyle variables including how many hours of sleep obtained on a typical day. Researchers found that visually impaired students averaged 9.2 hours of sleep, with a standard deviation of 2.24 hours. Assume that the number of hours of sleep for these visually impaired students is normally distributed. (a) What is the probability that a visually impaired student gets less than 6.4 hours of sleep? answer: (b) What is the probability that a visually impaired student gets between 6.2 and 8.84 hours of sleep? answer: (c) Thirty percent of students get less than how many hours of sleep on a typical day? answer: hours Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining.
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