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MidtermFormA

# MidtermFormA - MIDTERM EXAM(Form A PSTAT 5E HSU Fully...

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MIDTERM EXAM (Form A) PSTAT 5E HSU 10/29/2010 Fully explain your answer. Answers with no explaination will not receive credit. GOOD LUCK!!! 1. (20%) A state park has two campgrounds. Suppose that the probability that there is still space in the first campground at 5 pm is 0.3, the probability that there is still space in the second campground at 5 pm is 0.2, and the probability that there is still space in both campground at 5 pm is 0.1. What is the probability that a camper who shows up at precisely 5 pm will be able to camp (a) (10%) in at least one of the campgrounds? (b) (10%) in neither of the campgrounds? 2. (20%) A population consists of ten employment files, four of which are out of date. Two files are randomly selected for inspection. (a) (5%) What is the probability that both of the two sampled files will be out of date? (b) (5%) What is the probability that exactly one of the two sampled files will be out of date? (c) (5%) What is the probability that neither of the two sampled files will be out of date?

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