Select the correct answer.
Which measure is the same as the standard error of the mean?
A
standard deviation of the population
OB. standard deviation of the sample means
OC. mean of the sample
D. mean of the population
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a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8