Q. Given P(A)=0.39,P(B)=0.5 and P(A and B)=0.345, find the value of P(B∣A), rounding to the nearest thousandth, if necessary.Answer:
Identify Conditional Probability Formula: To find the conditional probabilityP(B∣A), we use the formula P(B∣A)=P(A)P(A and B). We are given P(A and B)=0.345 and P(A)=0.39.
Calculate P(B∣A): Now we perform the calculation using the values provided: P(B∣A)=0.390.345.
Perform Division: Calculating the division we get P(B∣A)=0.8846153846153846…
Round to Nearest Thousandth: Rounding to the nearest thousandth, we get P(B∣A)≈0.885.
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