Two marbles are randomly drawn from a bag containing 3 purple, 1 blue, and 1 yellow marble. the first marble is blue and is not replaced. find the probability of drawing a second marble that is purple.

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.