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Rob Lee knows his camera will take a good picture unless the flash is defective or the batteries are dead. The probability of

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Answer #1

Answer

let P(A) and P(B) be the probability of defective flash and dead battery

using the question data, we have

P(A) = 0.06

P(B) = 0.33

and P(A and B) = 0.03

probability of defective flash or dead battery = P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.06 + 0.33 - 0.03

= 0.36

It is given that camera will take a good picture unless the flash is defective or the batteries are dead

So, P(good picture) = 1 - P(A or B)

= 1 - 0.36

= 0.64

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