The processing times for cases at a certain office follow a bell-shaped model withmean 124 days and standard deviation 33 days.The processing time for a certain case was 179 days. Was this a typical processingtime or was it unusually long?Typical, because it is less than 3 standard deviations away from the mean.O Unusually long, because it is more than 1 standard deviation away from the mean.Unusually long, because it is less than 3 standard deviations away from the mean.Unusually long, because it is not more than 2 standard deviations away from the mean.Typical, because it is not more than 2 standard deviations away from the mean.Typical, because it is more than 1 standard deviation away from the mean.

The condition for Z-score being Unusual is: It is clear that if the Z-score is greater than 2 or…

Answered: The processing times for cases at a…

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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The GSS survey is conducted for approximately 2200 adults every year, since 1972 for a total of more than 38,000 participants. During several years of the GSS, participants were asked how many close friends they have. The mean for this variable was 7.44 friends, with a standard deviation of 10.98. The median was 5.00 and the mode was 4.00. What do the mean and standard deviation suggest about the shape of the distribution?
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Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 35 minutes and a standard deviation of 3 minutes, while method B has a mean of 39 minutes and a standard deviation of 1.5 minutes. Which procedure is preferred if the procedure must be completed within 34 minutes? Which procedure is preferred if the procedure must be completed within 40.0 minutes? Which procedure is preferred if the procedure must be completed within 43 minutes?
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The results of a common standardized test used in psychology research is designed so that the population mean is 105 and the standard devlation is 30. A subject earns a score of 108. What is the Z-score for this raw score? Z-Score =
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can you find the mean and standard deviation?

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