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).

a) 0.0374  , b)  0.6500  , c) 0.3500

Step-by-step 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

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls