janie flips a coin 70 times and records if it comes up heads. if getting heads is a success, what is the…

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

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

Explanation:

Step1: Recall coin - flip probability

A fair coin has 2 possible outcomes (heads or tails).

Step2: Calculate probability of failure

The probability of getting heads (success) is $P(\text{success})=\frac{1}{2}=0.5$. The probability of failure $P(\text{failure}) = 1 - P(\text{success})$. So $P(\text{failure})=1 - 0.5=0.5$.

Answer:

0.5