Question

A study of death penalty cases (all first-degree murder charges with aggravating circumstances)
revealed the following relationship between the victim's race and the chances the offender was
sentenced to death: In 100 cases involving white victims, 20 offenders were sentenced to death.
In 100 cases involving black victims, 10 offenders were sentenced to death.

a. Is there a relationship between the race of the victim and the probability that
an offender was sentenced to death? Use a 5% level of significance and outline each of the
steps required in a test of statistical significance.
b. Would your answer be different if a 1% level of significance were used?

Answer 1