According to the Department of Education, the time college students spend on their cell phones daily is normally distributed with an average of 270 minutes and a standard deviation of 75 minutes. Suppose a college student is selected at random and the amount of time they spend on the phones that day is recorded. What is the probability that students spent less than 230 minutes on their phones that day? What is the probability that students spent more than 300 minutes on their phones that day? What is the probability that students spent between 200 and 350 minutes on their phones that day?

According to the Department of Education, the time college students spend on their cell phones daily is normally distributed with an average of 270 minutes and a standard deviation of 75 minutes. Suppose a college student is selected at random and the amount of time they spend on the phones that day is recorded. What is the probability that students spent less than 230 minutes on their phones that day? What is the probability that students spent more than 300 minutes on their phones that day? What is the probability that students spent between 200 and 350 minutes on their phones that day?

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....

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