a2 - Assignment 2 Weihan Ni A20252394 MBA 507 Decision...

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Assignment 2 Weihan Ni A20252394 MBA 507 Decision Making 5.2 a) The announcer is using “law of averages”. This is not like to be right, since the weather in summer and the weather in winter are independent. b) Also “law of averages”. Each bat is independent. 5.6 a) Because almost all the other players get no jackpot. b) This works as an AD to make more people think they can win and come to gamble, but almost all of the is going to lose, making the Desert Inn Resort richer. 5.8 a) No, sum less than 1. b) No, sum more than 1. c) Yes. d) No, since one value is negative. e) Yes 5.10 P (win something) = 1 - P (not win anything) = 1 - (1-10%) 6 = 1 - 0.531 = 0.469 5.14 a) 55%*55% = 0.3025 b) (1 – 55%) 2 = 0.2025 c) 1 - (55%+32%) 2 = 0.2431 5.24 a) i) 1- 45% - 40% - 11% = 4% ii) 40% + 11% = 51% iii) 1 – 45% = 55% b) i) 0.45 4 =0.041 ii) (1-0.04) 4 =0.849 iii) 1-0.4 4 =0.9744 iv) 1-(1-0.11) 4 =0.373 5.32 a) The possibility of it to be a men’s is bigger than women’s, since the assistant is random picking from 10 men’s and 4 women’s. b) No. 5.38 a) 0.62 b) 0.26/0.30 = 0.867 c) 0.12/0.36=0.333 d) 1-(0.10+0.24)= 0.66 6.8 The distribution is bimodal. The two mode are around $800 and 1500. The reason is likely that men and women get different discount amounts and the data of two genders are in the same set. 6.10 a) Min: $131.00 Q1: 845.20 Median: 1327.50 Q3: 1662.50 Max: 2520.00 b)
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6.16 34+24=58 for 1997????
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This note was uploaded on 11/07/2011 for the course ECON 101 taught by Professor Johnson during the Spring '11 term at Sciences Po.

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a2 - Assignment 2 Weihan Ni A20252394 MBA 507 Decision...

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