An administrative assistant is making some coples. She made 14 one-sided copies and 27 two-sided copies for the V. P. of Marketing, which took a total of 177 seconds. Next, she made 47 one-sided copies and 12 two-sided copies for the Director of Sales, which took 201 seconds. How long does it take to make each type of copy?

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.