Module 8.1: Hypothesis Testing Basics Flashcards
(14 cards)
What is a hypothesis?
A statement about the value of a population parameter developed for the purpose of testing a theory.
Hypothesis are stated in terms of the ______.
Population parameter being tested
What is a null hypothesis and its notation?
The hypothesis that the researcher wants to reject. It is the hypothesis that is actually being tested.
Null hypothesis always includes an _______ condition.
Equal to
What is an alternative hypothesis and its notation?
What is concluded if there is sufficient evidence to reject the null hypothesis and is usually what you are trying to assess.
Null and alternative hypothesis are respectively__________.
Mutually exclusive and collectively exhaustive
What is the formula for the test statistic?
Define a type 1 error.
This is the rejection of the null hypothesis when it is actually true.
Define a type 2 error
This is failure to reject the null hypothesis when it is actually false.
Define significance level
The probability of making a type I error, and is denoted by ——>
What is a power test?
The probability of correctly rejecting the null hypothesis when it is false.
What is the formula for power test?
= 1 - P(type 2 error)
What is the decision rule?
Rejecting or failing to reject the null hypothesis is based on the distribution of the test statistic.
What is a p value?
Probability of obtaining a test statistic that would lead to a rejection of the hypothesis ( assuming null is true)
