Suppose you have a large number of white marbles, an equal number of black marbles, and three bags. A friend is going to choose one of the bags and then draw a marble at random from that bag. How can you distribute the marbles to maximize the probability of drawing a black marble? What will this probability be, approximately? (Hint: You can make it more than 2 /3.

The scatterplot below shows the number of hours that students read weekly and the number of hours that they spend on chores weekly. which statement about the scatterplot is true?

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.