A random variable X that has probability mass function (pmf) given by p(x) = 1/(b-a+1) over the range Rx = [a, a+1, a+2, …, b] is said to have a discrete uniformed distribution. Calculate the following statistics values: a) What is the mean of this distribution? b) What is the variance of this distribution (you can use the result from the previous problem)?

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

Which of the following expressions is equal to 2x^2+8

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?