of the last 20 trains to arrive at danville station, 15 were on time. what is the experimental probability…

of the last 20 trains to arrive at danville station, 15 were on time. what is the experimental probability that the next train to arrive will be on time? write your answer as a fraction or whole number. p(on time) =

of the last 20 trains to arrive at danville station, 15 were on time. what is the experimental probability that the next train to arrive will be on time? write your answer as a fraction or whole number. p(on time) =

Answer

Explanation:

Step1: Recall probability formula

The experimental - probability formula is $P(A)=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$.

Step2: Identify favorable and total outcomes

The total number of trains observed is 20, so the total number of outcomes is 20. The number of trains that were on - time is 15, so the number of favorable outcomes is 15.

Step3: Calculate the probability

$P(\text{on time})=\frac{15}{20}=\frac{3}{4}$

Answer:

$\frac{3}{4}$