Posted by priyanka on Monday, May 14, 2012 at 11:20pm.
A simple random sample of 50 items from a population with σ 6 resulted in a sample
mean of 32.
a. Provide a 90% confidence interval for the population mean

statistics  PsyDAG, Tuesday, May 15, 2012 at 3:30pm
90% = mean ± 1.645 SEm
SEm = SD/√n