An unfair coin has a probability 0.4 of landing heads. The coin is tossed four times. What is the probability that it lands heads at least once?
A) 0.25
B) 0.9744
C) 0.8704
D) 0.936

Question

Quizplus · Accepted Answer

The probability of the coin landing tails is 0.6. The probability of getting tails four times in a row is 0.6^4 = 0.1296. Therefore, the probability of getting at least one head is 1 - 0.1296 = 0.8704.

An Unfair Coin Has a Probability 0