Use the table to answer the following questions. (You should be able to cut and

Question

Use the table to answer the following questions. (You should be able to cut and paste it directly into Excel). Insured Not Insured Row Totals 18-33 432 155 587 35-49 577 161 738 50 and older 701 200 901 Column Totals 1710 516 2226 What is the probability of a person being between the ages of 18-33? What is the probability of a person not being between the ages of 18-33? What is the probability that person is over 35 and not insured? If we know an individual is under the age of 50, what is the probability that they are insured? Are the events "being over 50 years old" and "being insured" independent?

Explanation / Answer

a)

What is the probability of a person being between the ages of 18-33?

587/2226=0.2637

b)

What is the probability of a person not being between the ages of 18-33?

1-0.2637=0.736

c)

What is the probability that person is over 35 and not insured?

161/2226+200/2226=0.072+0.0898=0.162

d)

If we know an individual is under the age of 50, what is the probability that they are insured?

432+577/587+738=0.7615

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