9. Which of the following questions would yield data with variability? A How many nickels are in a coin collection?
B How many students in the 5th period class completed their project on January 27, 2014?
C How many dimes are in $6?
D How many students in Mr. Lee's fifth period class today have a last name that starts with M?

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

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.