Answer:
0.82
Explanation:
You want the probability of A or B given the frequencies shown in the diagram.
P(A or B)
The probability of either event is the ratio of the number of times it occurs to the total number of trials. The total number of trials is shown as ...
num trials = 23 + 18 + 9 = 50
Then the probability of interest is ...
P(A or B) = P(A) + P(B) . . . . . . . . . . . . . given in the diagram
P(A or B) = 23/50 +18/50 = 41/50
P(A or B) = 0.82