STATS 250 Lecture Notes - Lecture 7: Venn Diagram, Cumulative Distribution Function, Random Variable
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Probability example problems: raffles for prizes for a fundraiser, a local school will raffle off two donated prizes - a new tv and a new cell phone. The many attendees at the fundraiser are allowed to purchase a ticket for one or both raffles if they wished. Total: what is the probability that a randomly selected attendee will not purchase a ticket to try to win the tv, p[not tv] = 1 []= 1 400. 1000= 0. 60: what is the probability that a randomly selected attendee will purchase a ticket to try to win either a cell phone or a tv, p(tv or phone) = p(tv) + p(phone) - p(tv and phone) 0. 75= 0. 40: blood type about of all adults in the united states have type o+ blood. )*(1- ) = 8/27: what is the probability that at least one will have type o+ blood, p(at least one will have o+) = 1 - p(none will have o+)
