Question
A student wanted to quickly construct a 95% confidence interval for the average age of students in her statistics class. She randomly selected 9 students.
A student wanted to quickly construct a 95% confidence interval for the average age of students in her statistics class. She randomly selected 9 students. Their average age was 19.1 yrs, and a standard deviation of 1.5. What is the 95% confidence interval for the population mean?
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Step: 1
The critical value is calculated as follows From the given information the sample size i...
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Step: 2
Step: 3
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Applied Statistics In Business And Economics
Authors: David Doane, Lori Seward
4th Edition
73521485, 978-0073521480
