Chapter 9
Hypothesis Testing
Learning Objectives
1.
Learn how to formulate and test hypotheses about a population mean and/or a population proportion.
2.
Understand the types of errors possible when conducting a hypothesis test.
3.
Be able to determine the probability of making various errors in hypothesis tests.
4.
Know how to compute and interpret
p
-values.
5.
Be able to use critical values to draw hypothesis testing conclusions.
6.
Be able to determine the size of a simple random sample necessary to keep the probability of
hypothesis testing errors within acceptable limits.
7.
Know the definition of the following terms:
null hypothesis
two-tailed test
alternative hypothesis
p
-value
Type I error
level of significance
Type II error
critical value
one-tail test
9 - 1
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