Question

Set Theory and Conditional Probability Problem #1 : (10pts) If P(A) 0.3 and P(B)0.2 and P(A n B) - 0.1. Determine the following probabilities Problem #2: (10pts) a) If the sets Xand Yare non-mutually exclusive , show that: b) Given two events X and Y, draw a Venn diagram to demonstrate that P(X)- P(XnY) + P(XnY), and deduce that P(X)- P(X/Y)P(Y) + P(X/Y)P(Y). Problem #3: (15pts) Consider two events X and Y with probabilities, P(X) 7/15, P(XnY)-1/3, and P(X/Y)-2/3. Calculate P(Y) , P(Y/X), and P(Y/X). State with reasons whether the events X and Y are dependent or mutually exclusive Problem 2.93 from textbook (6th edition): (1Opts) The following table summarizes the number of deceased beetles under autolysis (the destruction of a cell after its death by the action of its own enzymes) and putrefaction (decomposition of organic matter, especially protein, by microorganisms, resulting in production of foul-smelling matter): Autolvsis oW 14. 30 Putrefaction High 47 oW (a) If the autolysis of a sample is high, what is the probability that the putrefaction is low? (b) If the putrefaction of a sample is high, what is the probability that the autolysis is high? (c) If the putrefaction of a sample is low, what is the probability that the autolysis is low?

Answer 1