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Q1) Production Company creates DVD's by thousands. Though, sometimes there are minor defects in DVD's which make them "faulty" by industry standards. For one company, they evaluate that 3% of their DVD's are defective, and should be exchanged/returned for refund by customer. Best Buy buys DVD's from this company, which is where you usually shop. Assume you buy 20 DVD's.

a) Determine the probability that exactly one of the CD's is defective?

b) Find out the probability that at least one of the CD's is defective?

c) Determine probability all of the CD's are in good condition (not defective)?

Q2) A particular population is evaluated to be made up of 26% college graduates (regardless of degree). If we arbitrarily choose 100 people from this population, determine the probability that our sample contains at least 30 college graduates?

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