Calculator Which of the following sources of quantitative standards should be used with caution because it can perpetuate inefficiencies? a. Input from operating personnel b. Historical experience c. Statistical methods d. Engineering studies e. None of these choices are correct.

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries.what fraction of kathy’s money was left?

Is a positive integer raised to a negative power always positive

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.