Practice+Test+3B+Solutions

Practice+Test+3B+Solutions - Practice Test 3B Solutions...

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Unformatted text preview: Practice Test 3B Solutions 1. 2. 3. 4. 5. 6. a. Event b. Outcome c. outcome 4/52 x 3/51 x 2/50 x 1/49 13/52 x 12/51 x 11/50 x 10/49 6/6 x 5/6 x 4/6 x 3/6 x 2/6 x 1/6 20.4% x 74.3%= 15.1572% Yes. Because it is safe to assume the outcomes are equally likely. And we know the outcomes. 7. No. P(A|B) does not equal P(B). 8. False. Events can be neither mutually exclusive nor independent. 9. 39/52 x 38/51 10. .60 + .20  ­ .15= .65 11. All heads: ½ x ½ x ½ x ½ x ½ = 1/32 All Tails: ½ x ½ x ½ x ½ x ½=1/32= 1 ­ 1/32 ­ 1/32= 15/16 12. 5/8 13. 1 ­(48/52 x 47/51 x 46/50) 14. 4/52 x 4/51 15. 16. No a 4 or a 6 can occur. A 4 and 6 are members of both events. 17. No. P(B)=3/6 P(B|A) does not = P(B) 18. Because p(A and B) equals zero. They both can’t occur. ...
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This note was uploaded on 12/12/2010 for the course ECON ECON 15A taught by Professor Rajendram.patel during the Fall '10 term at UC Irvine.

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