Question

An IQ test was administered to a random sample of 26 mental patients and the mean was found to be 99.7. For this test, the population values are known to be normally distributed and with a population standard deviation of 15. Construct a 90% confidence interval for the mean IQ of the population.

Dec 18, 2014

http://davidmlane.com/hyperstat/z_table.html

Dec 18, 2014

Related Questions

A random sample is selected from a normal population with a mean of __40 and a standard deviation of... 3. Suppose 20% of all heart transplant patients do not survive the operation. a. Think about taking... A doctor wants to know if her patients are happy with her. She decides to survey a sample of her cli...