Find the standard deviation of this set of data 15,21,15,20,19

Round to the nearest thousandth as needed

In 1996 ato boldon of ucla ran the 100-meter dash in 9.92 seconds. in 1969 john carlos of san jose state ran the 100-yard dash in 9.1 seconds. what was the speed for each runner in yards per second?

Ken paid $12 for two magazines the cost of each magazine was a multiple of three dollars what are the possible prices of the magazines

A lakefront cottage that is 30 feet high casts a shadow on the water. How long is that shadow if a 16-foot-high truck parked nearby casts an 8-foot shadow?

Bicyclist Mario Cipollini pedaled one stage of the 1999 tour de France in about 3.9 hours If he traveled about 195 kilometers what was his average speed in kilometers per hour

The perimeter of the rectangle below is 158 units. find the length of side ad

In a random sample of 60 computers, the mean repair cost was $150. Assume the population standard deviation is $36. Construct a 90% confidence interval for the population mean.

Factor x^2 + 5x + 10 completley

How to factor x^2+2xy+2x+y^2+2y-8

Michelle's game piece was on 58. She uses these cards to capture a chip: + 2 + 30 + 2 where did she land? Write an equation to show her moves.

You are standing in one big palace where a king and his 5 queens stay. Each queen has 5 rooms. In each room there are 5 big cats. Each big cat has 5 little cats. Each cat has 4 legs. How many legs are there in the palace? Take ur time ...