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Given that events A and B are independent with 
P(A)=0.09 and 
P(B)=0.3, determine the value of 
P(B∣A), rounding to the nearest thousandth, if necessary.
Answer:

Given that events A and B are independent with P(A)=0.09 P(A)=0.09 and P(B)=0.3 P(B)=0.3 , determine the value of P(BA) P(B \mid A) , rounding to the nearest thousandth, if necessary.\newlineAnswer:

Full solution

Q. Given that events A and B are independent with P(A)=0.09 P(A)=0.09 and P(B)=0.3 P(B)=0.3 , determine the value of P(BA) P(B \mid A) , rounding to the nearest thousandth, if necessary.\newlineAnswer:
  1. Understand concept of conditional probability: Understand the concept of conditional probability for independent events. For independent events AA and BB, the probability of BB given AA, denoted as P(BA)P(B\mid A), is the same as the probability of BB, because the occurrence of AA does not affect the probability of BB.
  2. Apply concept to given probabilities: Apply the concept to the given probabilities.\newlineSince AA and BB are independent, P(BA)=P(B)P(B\mid A) = P(B).\newlineGiven P(B)=0.3P(B) = 0.3, we can directly state that P(BA)=0.3P(B\mid A) = 0.3.
  3. Round answer if necessary: Round the answer to the nearest thousandth if necessary. P(BA)=0.3P(B\mid A) = 0.3 does not require rounding to the nearest thousandth, as it is already at that precision level.

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