The following survey was taken after the 4th of July about t

The following survey was taken after the 4^th of July about the events each have attended. What was the probability that the person was male? What was the probability that the person attended a parade? What is the probability that the person was a male and attended a parade? What is the probability that the person attended a parade given they where male? What is the probability that the person was male given they attended a parade?

Solution

Consider:

a)

P(male) = 26/50 = 0.52 [answer]

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b)

P(parade) = 13/50 = 0.26 [answer]

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c)

P(male and parade) = 6/50 = 0.12 [answer]

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d)

P(parade|male) = 6/26 = 0.230769231 [answer]

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e)

P(male|parade) = 6/13 = 0.461538462 [answer]

	Fireworks	Parade	Picnic	Stayed Home	Totals
Male	5	6	2	13	26
Female	8	7	7	2	24
Totals	13	13	9	15	50