Question

Dion flips a coin 20 times and records if it comes up heads. If getting heads is a success, what is the probability of a success on each roll?.

0.2.
0.3.
0.5.
1.00

Answer 1

If the coin is fair, the probability of a success on each roll is 0.5.

Answer 2

0.5.

Explanation:

A probability is the division of the number of desired outcomes by the number of total outcomes.

In this problem:

A coin can be either heads or tails, so there are two possible outcomes.

The desired outcomes is heads, so there is one desired outcomes.

So the probability of a success on each roll is 1/2 = 0.5