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FOUR DIFFERENT CRIME VICTIMS LISTENED TO VOICE RECORDINGS OF SEVEN DIFFERENT MEN. IF THE VOICE IDENTIFICATIONS...

FOUR DIFFERENT CRIME VICTIMS LISTENED TO VOICE RECORDINGS OF SEVEN DIFFERENT MEN. IF THE VOICE IDENTIFICATIONS WERE MADE BY RANDOM GUESS, FIND THE PROBABILITY THAT ALL VICTIMS WOULD SELECT A DIFFERENT VOICE RECORDING

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Answer #1

Out of 7 different voices, the probability that a victim selects a different voice recording(not identifying the actual person) =6/7

So, the probability that all 4 victims select a different voice recording =(6/7)*(6/7)*(6/7)*(6/7) =(6/7)4 =0.5398

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