# Shared Flashcard Set

## Details

S10.1 - The Language of Hypothesis Testing
The Language of Hypothesis Testing
14
Mathematics
11/08/2013

Term
 Hypothesis
Definition
 A statement regarding a characteristic of one or more populations
Term
 Hypothesis testing
Definition
 A procedure based on sample evidence and probability used to test statements regarding a characteristic of one or more populations
Term
 3 steps in hypothesis testing
Definition
 1. A statement is made regarding the nature of the population2. Evidence is collected to test the statement3. The data are analyzed to assess the plausibility of the statement
Term
 Null hypothesis, H0
Definition
 A statement to be tested; a statement of no change, no effect, or no difference
Term
 Alternative hypothesis, H1 or Ha
Definition
 A statement that we are trying to find evidence to support
Term
 3 ways to set up the null and alternate hypothesis
Definition
 1. Two-tailed test2. Left-tailed test3. Right-tailed test
Term
 Two tailed test
Definition
 Equal hypothesis versus not equal hypothesisH0: parameter = some valueH1: parameter not= some value
Term
 Left-tailed test
Definition
 Equal versus less thanH0: parameter = some valueH1: parameter < some value
Term
 Right-tailed test
Definition
 Equal versus greater thanH0: parameter = some valueH1: parameter > some value
Term
 1. Four outcomes from hypothesis testing
Definition
 Reject null when alternative is true
Term
 2. Four outcomes from hypothesis testing
Definition
 Do not reject null when null is true
Term
 3. Four outcomes from hypothesis testing
Definition
 Reject null when null is true; type I error
Term
 4. Four outcomes from hypothesis testing
Definition
 Do not reject null when alternative is true; type II error
Term
 Level of significance. alpha
Definition
 The probability of making a type I error
Supporting users have an ad free experience!