Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations. using the t statistic.

With another study, where you also plan on evaluating a mean using the t statistic, you have a sample of n = 21 that has an SS of 500. What is the variance for the sample?

A. 5.00

B. 22. 36

C. 25

D. 250,000

The product of two negative rational numbers is always zero sometimes zero never zero

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers