Question 7 (4 points). Find the probabilities. Give your answers as fractions (1) You tossa fair...

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$Question 7 (4 points). Find the probabilities. Give your answers as fractions (1) You tossa fair coin three times. What are t$

Answer 1

Answer #1

{HHH,HHT,HTH,HTT,THH,THT,TTH,TTT}.

1) P( 2 heads)=2 heads/ total sample size for 3 coins = 4/8 = 1/2

2) P( 2 heads ia a row)=2 headsin a row/ total sample size for 3 coins = 3/8 = 3/8

2 6 2 (2,1) 2,2(2,3)(2,4) (2,5) (2,6) 5(5,1) 5,2(5,3)(5,4) (5,5) (5,6) 6 (6,1)(6,2)(6,3) 6,4) (6,5)(6,6)

3) 15/36 = 5/12

4) 3/36=1/12

Answer 2

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