Greg has four different colored cards in a box. Yellow, red, blue, and green. He randomly selects one card, records the color, and then replaces the card into the box. If Greg does this 300 times, how many yellow cards should he expect to select?

Find percent notation for 0.008 0.008=

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.

Two numbers have a sum of -19. one number is x. what expression represents the other number?