A coin is biased so that a head is twicw as likely to occur as a tail. Suppose the coin is tossed three times.

Question

A coin is biased so that a head is twicw as likely to occur as a tail. Suppose the coin is tossed three times.
What is the probality of getting at exactly two tails

Damon · Answer

p tails = 1/3 1/3 * 1/3 * 1/3 = 1/27

Washington · Answer

what is the disadvanatage of using variance as a measure of dispersion