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- The cumulative distribution function F(x) of a random variable X is given in the following table: 1 2 3 F(x) 0.5 b 1 a Let a and b are positive constants. If P(1 3) = 0.3. Then a and b equal to: a=0.1, b=0.3 None of these a=0.1, b=0.7 a=0.5, b=0.8A) find the pmf of X. B) find the median(s) of X. C) compute the conditional probability that X is even given that XConsider the probability mass functions of the two investment options that are presented to a businessperson. Investment A Profit X P10 000.00 P5 000.00 - P3 000.00 Probability P(X) 0.6 0.3 0.1 Investment B Profit X P20 000.00 P16 000.00 - P15 000.00 Probability P(X) 0.2 0.5 0.3 If you are the businessperson whom these investment proposals are presented, which investment are you going to choose? Your choice will determine of what type of businessperson you are. Support your answer by computing the mean or expected profit and variance or standard deviation of each investment, then explain on why you choose such investment.
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