b

What is true about the probability distribution function (pdf) of a discrete random variable Each probability must be equal, for it to be a true pdf It can never be negative It can be higher than one, because the area underneath it gives us probabilities The probability the random variable is x or less, is the the same as the probability that it is strictly less than X 1 pts Question 5 Let distribution A, B and C in the graph below indicate the impact on health, in terms of % change in blood pressure of a drug one year after it is taken. Which of the following distributions is negatively skewed? 0.8 -B 0.6 fx(2) 0.4 0.2 0 0 2 3 -3 No distribution B distribution A Cannot be determined based on the provided information o distribution