Chapter 6 Confidence Intervals
This is where statistical inference begins. The first technique we study is the use of confidence
1. We remember that statistical inference is when we take the information from a sample and
Spring 2011 Q1. (4 points) Suppose X is a random variable With mean ,u = 50 and variance 02 = 49. A random .
sample of size n = 38 is selected from this population.
(a) Find the approximate distribution of X. Why is the C