Abag contains 3 white marbles and 6 black marbles. you pick out a marble, record its color, and put the marble back in the bag. if you repeat this process 36 times, how many times would you expect to remeve a black marble from the bag?

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.

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?