The probability that the person is over 40 years of age is 32/51 or 62.75%.
(the table is attached as image)
We know that,
The ratio of the size of the event space to the size of the sample space is the probability of an event.
The total number of possible outcomes is the size of the sample space.
The number of outcomes in the event you are interested in is called the event space.
Using the formula,
P = size of the event space/size of the sample space
⇒The probability that the person is older than 40,
sample size=255
size of the event space=85
P=85/255------> P=1/3
⇒the probability that the person drinks root beer,
sample size=255
size of the event space=75
P=75/255------> P=5/17
⇒the probability that the person is older than 40 of age or that they drink root beer,
P=(1/3)+(5/17)-----> P=(17*1+3*5)/51------> P=32/51-----> 0.6275----> 62.75%
therefore,
the answer is
32/51 or 62.75%
Find more answers on sample size here: https://brainly.com/question/25894237
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(complete question)
if one of the 255 subjects is randomly selected, find the probability that the person is over 40 years of age or that they drink root beer.
