AP EAMCET · Maths · Probability
The probability that an event does not happen in one trial is 0.8 The probability that the event happens atmost once in three trials is
- A \(0.896\)
- B \(0.791\)
- C \(0.642\)
- D \(0.592\)
Answer & Solution
Correct Answer
(A) \(0.896\)
Step-by-step Solution
Detailed explanation
Given, \(p=0.2, q=0.8, n=3\) From binomial distribution, \(P(X=r)={ }^n C_2 P^r q^{n-r}\) Probability that event happens at most once, \(P(X \leq 1)=P(X=0)+P(X=1)\)…
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