For each of the situations below, describe what would be considered a Type I and Type II error.

a. A political scientist compares older and younger adults' attitudes toward the death penalty.

b. A movie critic wants to know if people prefer to see movies in 3-D or stereoscopic (not 3-D).

c. An owner of a grocery store tests shoppers' ability to tell the difference between brand-name cereal and generic cereal.

d. A teacher wants to know if boys and girls differ in their career goals.