hw6-3 - 10d Pr(s 1 Pr(s 2 Pr(s 3 Pr(s 5 Pr(s 6 =.99 16a.28...

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Math 1160 – Section 6.3 Answer Key 4. 6/50 = 3/25 = .12 or 12% 6a. 3/9 = 1/3 6b. 5/9 6c. 6/9 = 2/3 8a. No (do not add up to 1) 8b. No (can not have a negative probability) 8c. No (do not add up to 1 and can not have a probability of 2) 8d. Yes (the probabilities add up to 1 and all are values between 0 and 1) 10a. Pr (E) = Pr (s 1 ) + Pr (s 2 ) = .05 + .25 = .30 Pr (F) = Pr (s 3 ) + Pr (s 5 ) + Pr (s 6 ) = .05 + .63 + .01 = .69 10b. Pr (E ´ ) = Pr (s 3 ) + Pr (s 4 ) + Pr (s 5 ) + Pr (s 6 ) = .05 + .01 + .63 + .01 = .70 10c. 0 (They have no outcomes in common.)
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Unformatted text preview: 10d. Pr (s 1 )+ Pr (s 2 ) + Pr (s 3 ) + Pr (s 5 ) + Pr (s 6 ) = .99 16a. .28 16b. .49 16c. .69 16d. Odds are 77 to 23 16e. Odds are 51 to 49 16f. Odds are 9 to 41 18a. .1 (Drawing the Venn Diagram will help on this problem.) 18b. .8 27a. Pr(20-34) = .15 Pr(35-49) = .55 Pr(50-64) = .20 Pr(65-79) = .10 27b. Pr(50-64) + Pr(65-79) = .20 + .10 = .30 28a. 1600/7370 = 160/737 = .2171 28b. Pr(House is less than 7 years old) = 4370/7370 = 437/737 The odds the house is less than 7 years old is 437 to 300....
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This note was uploaded on 05/21/2008 for the course MATH 116 taught by Professor Copeland during the Spring '08 term at Western Michigan.

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