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 deviation25.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 standarddeviations 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 85apps on it. Round to 4 decimal places. Show your work or what you enter into acalculator. (8 pts)

See attached photo belowExplanation:For parts A-F : I draw all the steps in one normal curveIn your…

Answered: 1. According to a website the mean…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A company provides a full range of insurance and financial services. Suppose the company reported the results of a survey of 1,045 identity theft victims. The survey shows victims spend an average of 79 hours trying to resolve their cases. If the true average time spent was 79 hours, determine the probability that a test of hypothesis designed to test that the average was less than 83 hours would select the research hypothesis. Use α=0.05 and a standard deviation of 50. The probability that the hypothesis test would select the research hypothesis is
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