if a sample of 21 runners were taken from a population of 580 runners, could refer to the mean of how many runners' times? A. 21 B. 580 C. Neither 21 nor 580 D. Both 21 and 580

The following data represent the flight time (in minutes) of a random sample of seven flights from one city to another city. 282 , 268 , 258 , 264 , 255 , 261 , 267 Compute the range and sample standard deviation of flight time.

How do you explain expanded notation method for 82 times 3

Used paperback books are$0.25, and hardback books are $0.50. if you buy 3 paperback books and 5 hardback books how much money do you spend?

The circumference of the circle-shaped rug is 56.52 inches. What is the area of the rug?

Compare how u would model and record finding the sum and difference of two rocks weighing 2/8 pound and 3/8 pound.

In two years the value of a car chnaged from 14,000 to 11,200 what is the percent of change

What is the difference 4 1/3 - (-2/3)

Elaine is painting a fence. she knows that she needs 1 gallon of paint for each 10 feet of fencing. The fencing will enclose a rectangular yard that is 3 yards long and 2 yards wide. how much paint does Elaine need?

What is the square root of 2/9?

What is 75% of 200?