s Q87 Conditional probability Pages 171-174 39 10 39 37 41 15 28 15 7 42 26 28 2

Question

s Q87 Conditional probability Pages 171-174 39 10 39 37 41 15 28 15 7 42 26 28 22 41 6 47 23 16 22 49 34 30 25 28 22 8 19 44 46 25 41 41 47 28 a. If an even number is selected, from the above 34 numbers, what is the probability that it is strictly g than 29 ? i.e. calculate P( strictly greater than 29 | even) 6 points Hint P(B| A) where A-even B = strictly greater than 29 reater b. If an number strictly greater than 29 is selected, from the above 34 numbers, what is the probability that it is even? i.e Calculate P( even strictly greater than 29) 6 points Hint P(B] A) where A strictly greater than 29 and B-even 24

Explanation / Answer

a) P(Strictly greater than 29/Even)

No of even no = 15

Strictly greater than 29 from even no = 5

P(Strictly greater than 29/Even) = 5/15 = 1/3

b)  P(Even/Strictly greater than 29) = 5/15 = 1/3

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