Section 1.1: Introduction to Chance Models
h h h h h
LO1.1-1:hRecognizehthehdifferencehbetweenhparametershandhstatistics.
LO1.1-2:hDescribehhowhtohusehcoinhtossinghtohsimulatehoutcomeshfromhahchancehmodelhofhthehran-
domhchoicehbetweenhtwohevents.
h
Questionsh1hthroughh4:
DohredhuniformhwearershtendhtohwinhmorehoftenhthanhthosehwearinghbluehuniformshinhTaekwond
ohmatcheshwherehcompetitorsharehrandomlyhassignedhtohwearheitherhahredhorhbluehuniform?hInhah
samplehofh80hTaekwondohmatches,htherehwereh45hmatcheshwherehthehredhuniformhwearerhwon.
1. Whathishthehparameterhofhinteresthforhthishstudy?
A. Thehlong-runhproportionhofhTaekwondohmatcheshinhwhichhthehredhuniformhwearerhwins
B. Thehproportionhofhmatcheshinhwhichhthehredhuniformhwearerhwinshinhahsamplehofh80hTaek
wondohmatches
C. Whetherhthehredhuniformhwearerhwinshahmatch
D.h 0.50
Ans:hA;hLO:h1.1-1;hDifficulty:hEasy;hType:hMC
2. Whathishthehstatistichforhthishstudy?
A. Thehlong-runhproportionhofhTaekwondohmatcheshinhwhichhthehredhuniformhwearerhwins
B. Thehproportionhofhmatcheshinhwhichhthehredhuniformhwearerhwinshinhahsamplehofh80hTaek
wondohmatches
C. Whetherhthehredhuniformhwearerhwinshahmatch
D.h 0.50
Ans:hB;hLO:h1.1-1;hDifficulty:hEasy;hType:hMC
3. Givenhbelowhishthehsimulatedhdistributionhofhthehnumberhofh―redhwins‖hthathcouldhhappenhbyhchan
cehalonehinhahsamplehofh80hmatches.hBasedhonhthishsimulation,hishourhobservedhresulthstatisticallyhs
ignificant?
A. Yes,hsinceh45hishlargerhthanh40.
B. Yes,hsincehthehheighthofhthehdotplothaboveh45hishsmallerhthanhthehheighthofhthehdotpl
othaboveh40.
C. No,hsinceh45hishahfairlyhtypicalhoutcomehifhthehcolorhofhthehwinner‘shuniformhwashdeter
minedhbyhchancehalone.
FORhINSTRUCTORhUSEhONLY
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