When a data set is normally distributed, about how much of the data fall within two standard deviations of the mean?

34%

68%

95%

13.5%

Order the set {23%, 0.21, 1/4,1/5} from least to greatest.

A square's diagonal is 28√2. What is the length of each side? 23 42 28 25

Define a relation on Z by setting x R y if xy is even. Give a counterexample to show that R is not transitive. Find an ordered triple (a, b, c) satisfying the following. a R b and b R c, but a Not Related c (a, b, c) =

How do you slove 57 * 2000 with multiplying with powers of ten

What is the solution to 2 (6x + 1) - 3x = 10 - (x - 2) ?

A box contains one yellow, two red, and three green balls. Two balls are randomly chosen without replacement.

Three brothers share 2 sandwiches equally. Hoe much of a sandwich does each brother get?

The mathematics department of a college has 6 male professors, 12 female professors, 10 male teaching assistants, and 9 female teaching assistants.

The base of a triangular prism has an area of 18 square inches. If the height of the prism is 9.5 inches, what is the volume of the prism?

Expressions equivalent to - 3 (m-4mn)