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Question

Choose at random a young adult aged 19 to 22 years. Ask their age and where they live (with their parents, in their own place, or in some other place such as a college dormitory). Here is the probability model for the 12 possible answers:

Age in Year	19	20	21	22
Lives with Parents	0.12	0.12	0.14	0.12
Own Place	0.02	0.07	0.08	0.15
Other	0.04	0.04	0.06	0.04

What is the probability that the person chosen does not live with his or her parents?

%

Answer 1

Each of the ages have a specific probability for living on their own, so you should be able to add the probabilities (0.04 + 0.04+ 0.06 + 0.04) and you get 0.18. You have a 18% chance of selecting a person that lives in his or her own place.