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Specify the "status-quo"1.
Specify the condition that would lead to change or action2.
Trying to find evidence AGAINST 3.
Specify the "effect" we are looking for1.
Specify the research question2.
Specify the condition that would cause change to happen or
an action to be taken
Specify the condition that we will not believe unless "strong
evidence" supports it
Two formal statementsa.
Usually about parameters 1.
Are about the population(s) of interesti.
Subject of Hypothesesb.
Defendant is Innocenti.
Defendant is Guiltyii.
Example: Trial by Juryc.
Mutually exclusive: both can't occur at once1.
Collectively exhaustive: together covers every reasonable
We will consider only cases for which the null and alternative
Can be one sidedi.
Can be two sidedii.
Hypotheses about Parameterse.
Value is called the null valuei.
Null value is parameter with subscript 0ii.
Point of equality must be with the null hypothesisiii.
Specifying the Hypotheses: I.
Could the sample reasonably occurred if is true?i.
"reject " sample result = significant
Assume is Truea.
Hypothesis Test: The Big IdeaII.
Sample Z HT Module
Thursday, January 19, 2017 02:39 PM
Unit 1 Page 1