Let X be a continuous random variable with the density function f(x) = 2x,
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a. Find E(X). b. Find E(X2) and Var(X).

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.

In which form is the following function written? y = - 2(x – 3)(x + 5)