You have been put in charge of buying CDs, videos, and movies for your school for the entire year. CDs are $12, Videos are $25, ad DVDs are $40. You must spend at least $2,325, but no more than $2,350. You must buy at least ten of each item. Videos must be twice the number of DVDs and CDs must be 4 more than videos. How many of each item should you buy so the sum of your purchases is within the budget? Explain how you got your answer.

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.