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Question
a and b are independent events. use the following probabilities to answer the places. p(a) = 0.49, p(a and b) = 0.02, find p(b) p(b) = enter an integer or decimal number, accurate to at least 4 decimal places more.. hint: independent events video on independent events +
Step1: Recall the formula for independent events
For independent events $A$ and $B$, $P(A\cap B)=P(A)\times P(B)$.
Step2: Solve for $P(B)$
We can re - arrange the formula to $P(B)=\frac{P(A\cap B)}{P(A)}$.
Substitute $P(A) = 0.49$ and $P(A\cap B)=0.02$ into the formula: $P(B)=\frac{0.02}{0.49}$.
Step3: Calculate the value
$P(B)=\frac{0.02}{0.49}\approx0.0408$
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$0.0408$