Question

Janie flips a coin 70 times and records if it comes up heads. If getting heads is a success, what is the probability of a failure? 0.2 0.5 0.7 1.00

Answer 1

The correct answer is 0.5

Answer 2

The probability of failure is:

0.5

Explanation:

It is given that:

Janie flips a coin 70 times and records if it comes up heads.

Also, getting of a head is considered as a success.

This means that getting a tail will be a failure for the experiment.

As we know that for a unbiased coin the probability of getting a tail; and a head are equal.

Hence, the probability of head is: 1/2=0.5

and probability of tail is: 1/2=0.5

Hence, the probability of a failure is: 0.5