Unformatted text preview: J 5 r 33'? wm‘vrx \M M15310 TEST 1 PAGE 4 OF 7 PRINT YOUR NAME HERE "$3 "3 ‘3 U" ’  W“: 3‘ l LONGER QUESTIONS. FOR THESE QUESTIONS WHEREVER THERE IS A NUMERICAL
l ANSWER YOU NEED TO SHOW HOW YOU ARRIVED AT IT. YOUR SCORE WILL BE
DETERMINED BY YOUR PRESENTATION OF YOUR METHOD.
”—1. Suppose we are given the following information :
3* (1) 10% of all adults belong to a health club
E (2) 20% of all adults exercise regularly.
(3) 8% of all adults both belong to a health club and exercise re ularly. Let {H} denote the event that an adult belongs to a health club
{E }denote the event that an adult exercises regularly. .fﬁ
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w (c) What is the probability that an adult exercises regularly and does not belong to a health Club?
P( E m H ).
:2 f} r 
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f} (d)What is the probability that an adult either does not belong to a health club or he does not exercise
_'ij regularly? P(E UH ) WA
"3/ ‘1‘; H: w a. \l 2* 3: A; j
at? F 4:3 1 T I:
(e) What is the probability that someone either belongs to a health club or exercises regularly?
.: i.e., P({ H mi} u {Em H}?
.; m \f’ :7 ‘
E ' ‘“ ” ...
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 Spring '08
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