A study indicates that 18- to 24- year olds spend a mean of 115 minutes watching video on their smartphones per month. Assume that the amount of time watching video on a smartphone per month is normally distributed and that the standard deviation is 20 minutes. Complete parts (a) through (d) below. a. What is the probability that an 18- to 24-year-old spends less than 90 minutes watching video on his or her smartphone per month? The probability that an 18- to 24-year-old spends less than 90 minutes watching video on his or her smartphone per month is 0.1057 . (Round to four decimal places as needed.) b. What is the probability that an 18- to 24-year-old spends between 90 and 135 minutes watching video on his or her smartphone per month? The probability that an 18- to 24-year-old spends between 90 and 135 minutes watching video on his or her smartphone per month is. (Round to four decimal places as needed.)

A study indicates that 18- to 24- year olds spend a mean of 115 minutes watching video on their smartphones per month. Assume that the amount of time watching video on a smartphone per month is normally distributed and that the standard deviation is 20 minutes. Complete parts (a) through (d) below. a. What is the probability that an 18- to 24-year-old spends less than 90 minutes watching video on his or her smartphone per month? The probability that an 18- to 24-year-old spends less than 90 minutes watching video on his or her smartphone per month is 0.1057 . (Round to four decimal places as needed.) b. What is the probability that an 18- to 24-year-old spends between 90 and 135 minutes watching video on his or her smartphone per month? The probability that an 18- to 24-year-old spends between 90 and 135 minutes watching video on his or her smartphone per month is. (Round to four decimal places as needed.)

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter9: Counting And Probability

Section9.3: Binomial Probability

Problem 33E: Sick leave probability that a given worker at Dyno Nutrition Will call in sick on a Monday is 004....

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