Directions: For scenarios 1-4, describe both Type I and Type II errors and describe a potential consequence.

Scenario 1: A clinical trial of a medical treatment designed to help patients get better

Null: Treatment doesn't work

Alternative: Treatment does work

Type I:

Consequence:

Type II:

Consequence:

Scenario 2: A fire alarm is designed to make a loud noise when there is a fire.

Null: There is no fire.

Alternative: There is a fire.

Type I:

Consequence:

Type II:

Consequence:

Scenario 3: A coin is used to determine which football team will choose to kick or receive .

Null The coin is fair

Alternative : The coin is not fair

Type 1 :

Consequence :

Type II :

Consequence :

Scenario 4 : A blood test is designed to detect a disease

Null : Patient does not have disease

Alternative : Patient has disease

Type 1 :

Consequence :

Type II :

Consequence :

For scenario 5 and 6 , identify the error ( Type I or Type II ) and describe a potential consequence

Scenario 5 A fire breaks out and the alarm doesn't ring .

Null: There is no fire.

Alternative : There is a fire .

Scenario 6: An X-ray machine at airport security says "a metal object found, but there is no metal object in your bag.

Null: Your bag does not contain a metal object."

Alternative : Your bag does contain a metal object.