Question

The table below gives the probability

density of taffies in a bag.
Banana Chocolate Cherry
0.19
0.16
Taffy
Probability 0.21
Grape
0.13
Vanilla
0.31
If a taffy is selected at random, what is the
probability that it is a vanilla or banana?
First, enter the probability of vanilla.

Answer 1

• P(vanilla) = 0.31
• P(banana) = 0.21
• P(vanilla or banana) = 0.52

Explanation:

Given a table with taffy flavors banana, chocolate, cherry, grape, and vanilla with respective probabilities 0.21, 0.19, 0.16, 0.13, 0.31, you want to know the probability of vanilla, the probability of banana, and the probability of vanilla or banana.

Table

The values of interest can be read directly from the table:

P(vanilla) = 0.31

P(banana) = 0.21

Or

The probability of one or the other of two mutually exclusive events is the sum of their individual probabilities:

P(vanilla or banana) = 0.31 +0.21 = 0.52

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