Which are properties of a random variable? Select all that apply 1) Random variable are denoted with a lower case letter
2) Random variables are denoted with an upper case letter
3) Random variables are represented by numerical values
4) Random variables are not represented by numerical values
5) Discrete random variables do not have values that are countable

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?