Term

Definition
A statement regarding a characteristic of one or more populations 


Term

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 population 2. Evidence is collected to test the statement 3. The data are analyzed to assess the plausibility of the statement 


Term

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. Twotailed test 2. Lefttailed test 3. Righttailed test 


Term

Definition
Equal hypothesis versus not equal hypothesis H0: parameter = some value H1: parameter not= some value 


Term

Definition
Equal versus less than H0: parameter = some value H1: parameter < some value 


Term

Definition
Equal versus greater than H0: parameter = some value H1: 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 

