Question

Match each situation below to the type of error that is being made. (Each error has one situation.)

A. Type I error B. Type II error

select A or B: A defendant in court is innocent (as presumed), but is wrongfully convicted and sent to prison.

select A or B: The ruling on the field in a football game was initially incorrect, but it is upheld and not overturned after replay review.

Answer 1

Type I error: Reject the null hypothesis when it is true

Type II error: Acceptt the null hypothesis when it is false

A defendant in court is innocent (as presumed), but is wrongfully convicted and sent to prison.

Null hypothesis: defendant in court is innocent

Alternate hypothesis: convicted and sent to prison

Hence, a true null hypothesis was rejected

Type I error

The ruling on the field in a football game was initially incorrect, but it is upheld and not overturned after replay review.

Null hypothesis: ruling on the field in a football game was incorrect

Alternate hypothesis: not overturned after replay review.

Hence, a false null hypothesis was accepted

Type II error