Explore BrainMass

Confidence interval

Please show all steps and send the solution in an attachment. please

1. A random sample of 80 observations from a normally distributed population produced a mean x(bar over the x)= 22.6 . Find a 95% confidence interval for the population mean m if the population standard deviation o(looks like a small o with a tip this sign is sigma , i think ) = 2.56

Solution Summary

This provides an example of finding a 95% confidence interval for a given situation.