The probability of each of three independent events is shown in the table below. What is the probability of A and C occurring, but not B? Event Probability of Occurrence A 25% B 15% C 42% A) 3.8%. B) 8.9%. C) 4.2%. D) 10.5%.

is it B? events are independent, so P(A and C and nonB)=25%*42%*(1-15%)=8.9%

yup… right thanks But events are independent then it would be multiplication rule between A and C ??

december 2008 Wrote: ------------------------------------------------------- > yup… right > thanks > > But events are independent then it would be > multiplication rule between A and C ?? Just using the multiplication rule gives you the probability of A and C occurring (without respect to whether or not B occurred), or (0.42)(0.25) = 10.5%.

A, and C, and nonB = occurrence of independent A, independent C and nonoccurence of independent B, so multiplication of the 3 probabilities

thnx