Question: Refer to Exercise 5.69. Use the complementation rule to find the probability that a randomly selected senator in the 109th Congress is Age (yr) No.

Refer to Exercise 5.69. Use the complementation rule to find the probability that a randomly selected senator in the 109th Congress is
Age (yr) No. of senators
Under 50 ........... 12
50–59 ........... 33
60–69 ........... 32
70–79 ........... 18
80 and over .......... 5
a. 50 years old or older.
b. Under 70 years old.

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