Question
Download Solution PDFIn an examination, the probability of a candidate solving a question is 1/2. out of given 5 questions in the examination, what is the probability that the candidate was able to solve at least 2 questions?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- Required probability = 1 - Not required probability
Calculation:
Here number of attempt (n) = 5
p = 1/2 and q = 1/2
P(X is greater than equal to 2) = 1 - P (X < 2) = 1 - P(X = 0) - P(X = 1)
∴ Required probability = 1 - P(X = 0) - P(X = 1)
Hence, option (4) is correct.
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