1. According to a website the mean number of apps on a smartphone in the United States is 90. Assume the number of apps is normally distributed with a mean 90 and standard deviation 25. On the axis above, do parts A-F. A. Sketch a normal curve. (3 pt) B. Label the axis with correct letter (z, x or x) to represent a normal distribution. (3pts) C. Label the axis with the mean value (given in the problem). (2pts) D. Label the axis with the other 6 values (the values that represent 1,2, and 3 standard deviations away from the mean). (6pts) E. Mark the value of 85 on the axis and write 85 under the axis. (2pts) F. Shade the area under the curve that corresponds to "less than 85". (2pts) G. Find the probability that a randomly selected smartphone will have less than 85 apps on it. Round to 4 decimal places. Show your work or what you enter into a calculator. (8 pts)

1. According to a website the mean number of apps on a smartphone in the United States is 90. Assume the number of apps is normally distributed with a mean 90 and standard deviation 25. On the axis above, do parts A-F. A. Sketch a normal curve. (3 pt) B. Label the axis with correct letter (z, x or x) to represent a normal distribution. (3pts) C. Label the axis with the mean value (given in the problem). (2pts) D. Label the axis with the other 6 values (the values that represent 1,2, and 3 standard deviations away from the mean). (6pts) E. Mark the value of 85 on the axis and write 85 under the axis. (2pts) F. Shade the area under the curve that corresponds to "less than 85". (2pts) G. Find the probability that a randomly selected smartphone will have less than 85 apps on it. Round to 4 decimal places. Show your work or what you enter into a calculator. (8 pts)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 22PFA

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