Outcome. C. A. R. E. S
Frequency. 20 25 30 10 15
Based on observed Frequency, what is the probability that Jorell will pick a letter R?
The probability of picking the letter R would be 30 out of the total frequency, which is:
P(R) = 30 / (20 + 25 + 30 + 10 + 15)
P(R) = 30 / 100
P(R) = 0.3 or 30%
Therefore, the probability of picking the letter R is 30%.
To calculate the probability of picking the letter R, we need to divide the frequency of the letter R by the total frequency of all the letters.
The total frequency is the sum of the frequencies of all the letters: 20 + 25 + 30 + 10 + 15 = 100.
The frequency of the letter R is 30.
Therefore, the probability of picking the letter R is:
P(R) = Frequency of R / Total frequency
P(R) = 30 / 100
P(R) = 0.3
So, the probability that Jorell will pick the letter R is 0.3 or 30%.