Tuesday 30 September 2014

PROBABILITY 1

The probability that Simba will beat Yanga in the national league is 9/13. Find the probability that it won’t be able to do so.
Solution

Let P(E)=  9/13         P(E’) = ?

P(E)   + P(E’) = 1

9/13 + P(E’) = 1

P(E’) = 1 -  9/13

P(E’) = 13/13 -  9/13


P(E’) =  13-9
               13

P (E’) =  4
             13

Hence the probability that it won’t beat Yanga is 4/13.


TRY THIS…………………………………..


The probability that Mgambo JKT FC will beat Mbeya City FC in the national league is 9/30. Find the probability that it won’t be able to do so.

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