Suppose that the average trip time from Oak Park to UIC on the Blue line is 23 minutes and that the standard deviation of the population is 16 minutes (sigma=16). We are interested to know whether the average trip time on Thursdays is shorter. We study a sample of 25 trips on Thursdays and the average is 21.5 minutes.

idgdjgd hxgxtsihbs tient tirs dyjstsjvd is gxykkķķłjdne ycjgej fxinsbrsuehgfs dtisg5i6ebcdud fxinsbrsuehgfs they'd dhd'dge gxje cehe

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 "

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d