Understanding Basic Statistics 6th Edition by Charles Henry Brase,Corrinne Pellillo Brase

تمرين 9

Basic Computation: Confidence Interval Suppose x has a mound-shaped distribution. A random sample of size 16 has sample mean 10 and sample standard deviation 2.
(a) Check Requirements Is it appropriate to use a Student's t distribution to compute a confidence interval for the Population mean Explain.
(b) Find a 90% confidence interval for .
(c) Interpretation Explain the meaning of the confidence interval you computed.