Data from the National Center for Education Statistics on 4,400 college graduates show that the mean time

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Data from the National Center for Education Statistics on 4,400 college graduates show that the mean time required to graduate with a bachelor's degree is 5.15 years with a standard deviation of 1.68 years. Use a single value to estimate the mean time required to graduate for all college graduates. Also, find the 95% confidence interval.
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Statistical Reasoning for Everyday Life

ISBN: 978-0321817624

4th edition

Authors: Jeff Bennett, Bill Briggs, Mario F. Triola

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