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A coin that when Hipped comes up heads with probability p
Chapter 4, Problem 3STE(choose chapter or problem)
QUESTION:
Problem 3STE
A coin that when Hipped comes up heads with probability p is flipped until either heads or tails has occurred twice. Find the expected number of flips.
Questions & Answers
QUESTION:
Problem 3STE
A coin that when Hipped comes up heads with probability p is flipped until either heads or tails has occurred twice. Find the expected number of flips.
ANSWER:
Solution:
Step 1 of 1:
We have to find the expected number of flips.
Let X denote number of flips.
We get the pmf of X as
When we need 2 plips,