Question
A coin is biased so that the probability of obtaining a head is 2/3. The coin is tossed four times. Find the probability of obtaining exactly two heads.
Answers
this is a binary expansion
(h + t)⁴
the term you want is...6 h² t²
6 * (2/3)² * (1/3)² = 24/81 = 8/27
(h + t)⁴
the term you want is...6 h² t²
6 * (2/3)² * (1/3)² = 24/81 = 8/27
Related Questions
a) What is the probability of obtaining 2 Heads when a coin is tossed twice?
b) What is the probabi...
A coin is weighted so that the probability of obtaining a head in a single toss is .4. If the coin i...
A coin is weighted so that the probability of obtaining a head in a single toss is .4. If the coin i...
The probability of a head occurring when a biased coin is tossed is 0.58. If the coin is tossed six...