1) in a normal distribution, what is the proportion of are between the z scores -2.09 and +.53?
2) in a normal distributio, find the probability expressed as a percentage that is greater than a z score of 2.33

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

Multiply. write your answer in simplest form. 3/8 x 5/7

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2