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The probability of me falling asleep in class is 10%. The probability of the teacher arriving late is 40%. What is the probability that I stay awake during the whole class but the teacher arrives late?
a)54%
b)50%
c)42%
d)36%
e)6%
Read Solution (Total 2)
-
- (90/100)*(40/100)=36/100
- 7 years agoHelpfull: Yes(0) No(0)
- Probability of falling sleep is 10%=1/10
Probability of not falling sleep is =1-1/10=9/10
Probability of the teacher arriving late is 40%=2/5
Probability that I stay awake during the whole class but the teacher arrives late= (9/10)*(2/5)*100
(18/50)*100=36%
- 7 years agoHelpfull: Yes(0) No(0)
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