UMA MESA DE BILHAR DE 360 USD DEVIA SER COMPRADA POR UM GRUPO DE RAPAZES QUE CONTRIBUIRAM EM PARTES IGUAIS. COMO QUATRO DELES DESISTIRAM, A QUOTA DE CADA UM DOS RESTANTES AUMENTOU EM 15 USD. QUANTOS RAPAZES ERAM

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.

Ana drinks chocolate milk out of glasses that each holdof a liter. she has of a liter of chocolate milk in her refrigerator. 10 how many glasses of chocolate milk can she pour?

X+y=-4 x-y=2 use elimination with adding and subtraction