According to a report from a business intelligence company, smartphone owners are using an average of 24 apps permonth. Assume that number of apps used per month by smartphone owners is normally distributed and that the standarddeviation is 4. Complete parts (a) through (d) below.KITa. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23.5and 24.520.471 (Round to three decimal places as needed.)b. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23 and24?0.394 (Round to three decimal places as needed.)c. If you select a random sample of 144 smartphone owners, what is the probability that the sample mean is between 23.5and 24.5?(Round to three decimal places as needed.).

From the provided information,Mean()=24standard deviation()=4sample size(n)=25

According to a report from a business intelligence company, smartphone owners are using an average of 24 apps per month. Assume that number of apps used per month by smartphone owners is normally distributed and that the standard deviation is 4. Complete parts (a) through (d) below. a. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23.5 and 24.5? 0.471 (Round to three decimal places as needed.) b. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23 and 24? 0.394 (Round to three decimal places as needed.) c. If you select a random sample of 144 smartphone owners, what is the probability that the sample mean is between 23.5 and 24.5? (Round to three decimal places as needed.)

According to a report from a business intelligence company, smartphone owners are using an average of 24 apps per month. Assume that number of apps used per month by smartphone owners is normally distributed and that the standard deviation is 4. Complete parts (a) through (d) below. a. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23.5 and 24.5? 0.471 (Round to three decimal places as needed.) b. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23 and 24? 0.394 (Round to three decimal places as needed.) c. If you select a random sample of 144 smartphone owners, what is the probability that the sample mean is between 23.5 and 24.5? (Round to three decimal places as needed.)

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....

See similar textbooks