Question

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) =

Explanation:

Step1: Define experimental probability

Experimental probability = $\frac{\text{Number of successful outcomes}}{\text{Total number of trials}}$

Step2: Plug in given values

Successful outcomes (on-time trains) = 15, total trials (total trains) = 20
$P(\text{on time}) = \frac{15}{20}$

Step3: Simplify the fraction

Divide numerator and denominator by 5: $\frac{15\div5}{20\div5} = \frac{3}{4}$

Answer:

$\frac{3}{4}$