You have data from a survey of 145 schoolteachers in Ector County. The mean age of this
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You have data from a survey of 145 schoolteachers 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. Round decimals to the nearest hundredth, for example “34.13% of the teachers would be between 38 and 45 years old.” You will need the Standard Normal Distribution Table found on pages 493-496 in the book.
What percentage of teachers would have an age between 32 and the mean?
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Business Research Methods
ISBN: 978-0073521503
12th edition
Authors: Donald R. Cooper, Pamela S. Schindler
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