The table below shows the soft drink preferances of the people in three age grou
ID: 3435994 • Letter: T
Question
The table below shows the soft drink preferances of the people in three age groups. If one of the subjects is randomly selected, find the probability that the person is over 40. If one of the subject is randomly selected, find the probability that the person is over 40 given that he or she drinks cola. If one of the subjects is randomly selected, find the probability that the person does NOT drink lemon-lime. Suppose that two subjects are randomly selected. Find the prbability that they both perfer root beer (assme that these events are independent). It is known that 2 percent of the books bound at a certain bindery have defective bindings. Find the prbability that 5 of 400 books bound by this bianary have defective bindings.Explanation / Answer
40
25
20
85
35
20
30
85
20
30
35
85
95
75
85
255
3).
P=0.02
n=400
x=5
P(X=x) = (nCx) px (1-p)n-x
P(X=5) = (100C5) 0.025 (1-0.02)100-5
P(X = 5) = 0.0911
40
25
20
85
35
20
30
85
20
30
35
85
95
75
85
255
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