Question:
Suppose that a fair coin is tossed repeatedly and independently. Let X denote the number of tosses required to obtain for the first time a tail that is immediately preceded by a head. Then E(X) and P(X > 4), respectively, are
Suppose that a fair coin is tossed repeatedly and independently. Let X denote the number of tosses required to obtain for the first time a tail that is immediately preceded by a head. Then E(X) and P(X > 4), respectively, are
Updated On: Oct 1, 2024
- 4 and \(\frac{5}{16}\)
- 4 and \(\frac{11}{16}\)
- 6 and \(\frac{5}{16}\)
- 6 and \(\frac{11}{16}\)
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The Correct Option is A
Solution and Explanation
The correct option is (A) : 4 and \(\frac{5}{16}\).
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