hw2sol_2

# hw2sol_2 - The Hong Kong University of Science and...

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Page 1 of 2 The Hong Kong University of Science and Technology IS O M 111 - Business statistics Assignment 2 (Problem Sheet 2: #4, #6, #12 & #13) Solutions 4. (a) Let C - complete the MBA G - score > 500 PG PGC PGCPC () ( ) (|)() .... . =+ =×+× = 05 07 02 03 041 (b) Probability the she will complete her MBA, given she scored 575 on the GMAT: PCG (|) .. . . = = = × = 05 07 0854 (c) Probability that she will graduate, given she scored 450 on the test: PGCC (| ) ( | ) ( ) . = = + = × × + × = 05 07 05 07 08 03 0593 6. (a) PD emo c ra t i c , ,, . == 634 635 1 480 240 0 429 (b) 208 . 0 240 , 480 , 1 611 , 307 ) ( = = Island HK P (c) P N T West Democratic (.. ) , . ∩= = 147 098 1 480 240 0 0994 (d) 232 . 0 240 , 480 , 1 ) 33858 197 , 47 434 , 330 ( ) . . ( = + = Liberal East T N P (e) P Democratic K East l n . ) , , . 145 986 261 621 0558

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Page 2 of 2 (f) PW () , ,, . == 205 401 1 480 240 0139 PWD (|) , , . 113 079 634 635 0178 As P(W) P(W|D), W and D are dependent. (g) PE L ∩= = 0 1 480 240 0 Hence, E and L are mutually exclusive. 12. (a) Let I be the event that the package is not properly sealed and A be the event that the package is from Machine A. Then,
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## This note was uploaded on 09/18/2010 for the course BBA ISOM111 taught by Professor Hu during the Fall '08 term at HKUST.

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hw2sol_2 - The Hong Kong University of Science and...

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