ECON 2500 Lecture Notes - Lecture 1: Statistical Hypothesis Testing, Sampling Distribution, Confidence Interval

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ECON 2500 Full Course Notes
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ECON 2500 Full Course Notes
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1 x i x s x y y i s y. If a and b are disjoint, ( c. Suppose that x is a discrete random variable whose distribution is. X n k n n k k n n n np. 1 n np p p p (1 n. Draw an srs of size n from any population with mean and finite standard deviation . When n is large, the sampling distribution of the sample mean x is approximately normal: A level c confidence interval for the mean of a normal population with known standard deviation is given by x where the probability is c that a standard normal variable takes a value between z . Two-sample t procedures when variance are unknown and not assumed equal. The random variable t has degrees of freedom. The random variable t has degrees of freedom 1 n.

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