Eighty percent of the students at a particular large university have logged on to Facebook at least once in the past week. A sample of 118 students is asked about their internet habits. Use the Cumulative Normal Distribution Table or technology. Round your answers to four decimal places. (a)What is the probability that less than 75% of the sampled students have logged on to Facebook within the last week? (b)What is the probability that more than 71% of the sampled students have logged on to Facebook within the last week? (c)What is the probability that the proportion of the sampled students who have logged on to Facebook within the last week is between 0.81 and 0.84 ?

Eighty percent of the students at a particular large university have logged on to Facebook at least once in the past week. A sample of 118 students is asked about their internet habits. Use the Cumulative Normal Distribution Table or technology. Round your answers to four decimal places. (a)What is the probability that less than 75% of the sampled students have logged on to Facebook within the last week? (b)What is the probability that more than 71% of the sampled students have logged on to Facebook within the last week? (c)What is the probability that the proportion of the sampled students who have logged on to Facebook within the last week is between 0.81 and 0.84 ?

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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