A university surveyed recent graduates of the English Department for their starting salaries. Four hundred graduates returned
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Question:
A university surveyed recent graduates of the English Department for their starting salaries. Four hundred graduates returned the survey. The average salary was $25,000. The population standard deviation was $2,500.
a. What is the point estimate of the population mean?
b. What is the 95% confidence interval for the mean salary of all graduates from the English Department?
Related Book For
Introductory Econometrics A Modern Approach
ISBN: 978-0324660548
4th edition
Authors: Jeffrey M. Wooldridge
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