The letter tiles C , A , R , E , and S are placed in a box. Without looking, Jorelle picks a letter tile from the box and records the result before placing it back. He repeats the procedure 100 times and observes the following results:

Question

Outcomes C A R E S
Frequency 20 25 30 10 15
Based on the observed frequency, what is the probability that Jorelle will pick a letter R ? The answer should be in percent form.

Answer 1

The total number of trials Jorelle conducted is 100.

The frequency of picking the letter R is 30.

Probability of picking the letter R = Frequency of picking R / Total number of trials
Probability of picking the letter R = 30 / 100 = 0.30 = 30%

Therefore, the probability that Jorelle will pick a letter R is 30%.