2377midtermsol summer 06

# 2377midtermsol summer 06 - Midterm Exam Solutions...

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Midterm Exam Solutions Mat2377-SpringjSummer 2006 June 2006 Question 1. In how many ways can 4 of 10 printers be chosen for a special company if a) order matters. b) order does not matter. a) OrtLer rIlamrs fo if1 ftJ'JtlvhJic71. Id~ = If) ! = JtJ ! = 5" 0 LftJ (/O-L/)~ 6! . 1) thif ;\$ Com b; nJJ'otJ 10 C'-j = 101 p/~/= ~/O. Question 2. A company that produces video cameras manufactures a basic model and a deluxe model. Over the past year, 40% of the cameras sold have been of the basic model. Of those buying the basic model, 30% purchase an extended warranty, whereas 50% of all deluxe purchasers do so. If you learn that a randomly selected purchaser has an extended warranty, how likely is it that he or she has a basic model? p( B)::: Lf 0 ~ f c. oS (13)== 60;: P(wj B)-; 30~ c .. f('wjf3 )~7ti P(f3Jw) =' P(wJB)f(B) = 3D/. X '101. f(WJJ3)P(8)j-f(W1B7 f(8; '30Zx'-ioi: + j"O~x6CJ~ ;2.fl.f~ 1 , 8 evenT oj bui':J bMic meld Be: /; 1 of' del vu \III: II /; pvrc)UM 11lJ ele71 led tVtl rrtl J"ll).

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## This note was uploaded on 12/06/2011 for the course MAT 2377 taught by Professor Azizk during the Spring '10 term at University of Ottawa.

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2377midtermsol summer 06 - Midterm Exam Solutions...

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