A state energy agency mailed questionnaires on energy conservation to 1,000 homeowners in the state capital. Five hundred questionnaires were returned. Suppose an experiment consists of
Randomly selecting one of the returned questionnaires. Consider the events:
A: {The home is constructed of brick}
B: {The home is more than 30 years old}
D: {The home is heated with oil} Which of the following describes the event $B \cup D ^ { C }$ ?
A) homes more than 30 years old that are not heated with oil
B) homes that are not older than 30 years old and heated with oil
C) homes more than 30 years old that are heated with oil
D) homes more than 30 years old or homes that are not heated with oil

Question

Quizplus · Accepted Answer

The event $B \cup D^{C}$ includes all outcomes in B (homes more than 30 years old) and all outcomes in $D^{C}$ (homes not heated with oil), which means it includes homes more than 30 years old or homes that are not heated with oil.

A State Energy Agency Mailed Questionnaires on Energy Conservation to 1,000