Chances Are


Kim C. Border (BS '74), Professor of Economics
MA3/103 Introduction to Probability and Statistics

The answer to the following question is more interesting than the question itself.

Consider the experiment of tossing a fair coin until you get two consecutive heads. What is the probability distribution of the number of tosses?

(Just to be clear, the sequence HH requires two tosses and HTTHH requires five tosses.)



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