A fair coin is tossed 4 times.Event A is the probability that there are no heads and Event B is that probability that there are no tails.What is the probability of (Event A or Event B)?
A)0.0625
B)0.1250
C)0.1875
D)0.2500

Question

Quizplus · Accepted Answer

The probability of getting no heads (all tails) in 4 tosses is (1/2)^4 = 0.0625. Similarly, the probability of getting no tails (all heads) is also 0.0625. Since these two events are mutually exclusive, the probability of either event A or event B occurring is 0.0625 + 0.0625 = 0.1250.

A Fair Coin Is Tossed 4 Times