Answer the question
-In a certain town, 10% of people commute to work by bicycle. If a person is selected randomly from the town, what are the odds against selecting someone who commutes by bicycle?
A)1 : 9
B)9 : 1
C)9 : 10
D)1 : 10

Question

Quizplus · Accepted Answer

The odds against selecting someone who commutes by bicycle are the ratio of the probability of not selecting a bicycle commuter to the probability of selecting one. Since 10% (or 10 out of 100) commute by bicycle, 90% (or 90 out of 100) do not. Therefore, the odds against are 90:10, which simplifies to 9:1.

Answer the Question -In a Certain Town, 10% of People Commute to Work