The probability of a head occurring when a biased coin is tossed is 0.58. If the coin is tossed six times, what is the probability of obtaining at most two heads in the six tosses??

Answer 1

binomial probability

(t + h)^6 ... (.42 + .58)^6 ... the 1st three terms of the expansion

p = .42^6 + 6(.42^5 * .58) + 15(.42^4 * .58^2) ...