In an all boys school, the heights of the student body are normally distributed with a mean of 67 inches and a standard deviation of 2 inches. Using the empirical rule, what percentage of the boys are between 65 and 69 inches tall?

There are several unique characteristics of qualitative research that make it distinct from quantitative research. describe the aspects of qualitative research and the elements of design that contribute to the rigor of the work. what actions of the researcher can compromise the integrity of the findings?

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11