GATE EC 2014 Set 3 — Question 14
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Engineering Mathematics → Statistics & Distributions → Binomial Distribution
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Question
An unbiased coin is tossed an infinite number of times. The probability that the fourth head appears at the tenth toss is
Correct answer
(C) 0.082
Solution
This is a problem of the negative binomial distribution. We are looking for the probability that the success occurs on the trial.
Given:
Given:
- Number of successes (the fourth head)
- Number of trials (the tenth toss)
- Probability of success (head) (unbiased coin)
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