You have data from a survey of 145 school teachers in Ector County. The mean age of

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You have data from a survey of 145 school teachers in Ector County. The mean age of this sample is 38 years, with a standard deviation of 7 years. Assume that this age data is normally distributed.

A. What percentage of teachers would have an age between 32 and the mean?

B. What percentage of the teachers would fall between 38 and 55 years old?

C. What percentage of teachers would be younger than 25?

D. What percentage of teachers would be between 45 and 55 years old?

E. What age represents the 75th percentile in the distribution?

F. What age represents the 20th percentile in the distribution?

Related Book For answer-question

Data Analysis and Decision Making

ISBN: 978-0538476126

4th edition

Authors: Christian Albright, Wayne Winston, Christopher Zappe

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Posted Date: Jan 19, 2021 07:46 AM

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You have data from a survey of 145 school teachers in Ector County. The mean age of

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