The probability guessing the correct answer to certain questions is p/2 . If the probability of not guessing the correct answer to same question is 3/4 then find value of p.
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probability of not guessing correct answer=1-p/2=2-p/2
given value is 3/4
so, 2-p/2=3/4
8-4p=6
2=4p
p=2/4=1/2
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Answer:
p= 1/2
Step-by-step explanation:
p(of event occuring) + p(of event not occuring) = 1
so,
p/2 + 3/4 = 1
2p + 3/4 = 1
2p + 3 = 4
2p = 1
p = 1/2
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