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A study on the lifestyles of visually impaired students was conducted by asking them to keep a diary for multiple weeks. 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 9.03 hours of sleep, with a standard deviation of 2.91 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 6.1 hours of sleep? answer: (b) What is the probability that a visually impaired student gets between 6.3 and 9.41 hours of sleep? answer: (c) Thirty percent of students get less than how many hours of sleep on a typical day? answer: hours

A study on the lifestyles of visually impaired students was conducted by asking them to keep a diary for multiple weeks. 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 9.03 hours of sleep, with a standard deviation of 2.91 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 6.1 hours of sleep? answer: (b) What is the probability that a visually impaired student gets between 6.3 and 9.41 hours of sleep? answer: (c) Thirty percent of students get less than how many hours of sleep on a typical day? answer: hours

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A study on the lifestyles of visually impaired students was conducted by asking them to keep a diary for multiple weeks. 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 9.03 hours of sleep, with a standard deviation of 2.91 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 6.1 hours of sleep? answer: (b) What is the probability that a visually impaired student gets between 6.3 and 9.41 hours of sleep? answer: (c) Thirty percent of students get less than how many hours of sleep on a typical day? answer: hours
Transcribed Image Text:A study on the lifestyles of visually impaired students was conducted by asking them to keep a diary for multiple weeks. 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 9.03 hours of sleep, with a standard deviation of 2.91 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 6.1 hours of sleep? answer: (b) What is the probability that a visually impaired student gets between 6.3 and 9.41 hours of sleep? answer: (c) Thirty percent of students get less than how many hours of sleep on a typical day? answer: hours
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