Question

In a sample of 1100 U.S.​ adults, 213 think that most celebrities are good role models. Two U.S. Adults are selected from this sample without replacement. Complete parts​ (a) through​ (c).

Answer 1

a) 0.0374 , b) 0.6500 , c) 0.3500

Explanation:

Pr (Both consider celebrities role models) = (213/1100) x (212/1099)

= 0.0374

Pr (None consider celebrities role models) = (887/1100) x (886/1099)

= 0.6500

Pr (atleast one consider celebrities role models) = 1 - Pr (None consider role models)

1 - 0.6500 = 0.3500