Wednesday

April 16, 2014

April 16, 2014

Posted by **Alex** on Wednesday, April 10, 2013 at 8:12pm.

MALE:

Age 19 and under - 4746

Age 20 - 1625

Age 21 - 1679

FEMALE:

Age 19 and under - 4517

Age 20 - 1553

Age 21 - 1627

Choose one driver at random. Find the probability that the driver is:

a. Male and 19 or under

b. Age 20 or female

c. At least 20 years old.

Thanks for your help!

- Math -
**PsyDAG**, Thursday, April 11, 2013 at 1:27pmA. 4746/(grand total) = ?

Grand total is the sum of*all*the observations.

B. Either-or probabilities are found by adding the individual probabilities.

(All age 20/grand total) + (all female/grand total) = ?

C. (all 20+)/(grand total) = ?

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