I need help evaluating the following integral and two summations. I have the answer to each (from calculator), but I must show my work. These are from advanced statistics/probability course questions, so knowledge in this area may supply tricks for evaluating.
(the correct answer to this is -6)
2. (notice that in this problem and in #3, there is the "choose function")
(the correct answer is 4)
(the correct answer is 24)
Thank you all in advance!