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A company surveyed 1000 people on their age and the number of jeans purchased annually. The...

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Basic Math

A company surveyed 1000 people on their age and the number ofjeans purchased annually. The results of the poll are shown in thetable.

Jeans Purchased Annually
0123 or MoreTotal
Under 120    64    79        57  200
12-1810    69    76        65  220
19-2521    69    114        56  260
over 2531    65    204        20  320
Total62    267    473        198  1000

A person is selected at random. Compute the probability of thefollowing.

(a) The person is over 25 and purchases 3 or more pairs of jeansannually.


(b) The person is in the age group 12-18 and purchases at most 2pairs of jeans annually.


(c) The person is in the age group 19-25 or purchases no jeansannually.


(d) The person is older than 18 or purchases exactly 1 pair ofjeans annually.

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