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1) Four fair coins are tossed. Find the following probabilities: a) P(getting 2 heads and 2...

1) Four fair coins are tossed. Find the following probabilities:

a) P(getting 2 heads and 2 tails)

b) P(getting at least one heads)

c) P(getting 2 heads given there is at least one heads)

2. The probability that a new Duracell battery is defective is 1%. Suppose that Janet buys a 100 pack of batteries from Costco. Find the following probabilities:

a) P(3 batteries are defective)

b) P(none of the batteries are defective)

Math   Statistics-And-Probability   
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