Suppose that 6 identical red wooden blocks and 9 identical white wooden blocks one on top of another how many different colour patterns can result

Need on this one asap im almost done with this subject

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

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.