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		over multiple points in time, at one point in time
		by measuring, by counting
		at each point, over an interval of points
		as incomplete, as complete
		all of the choices above
		none of the choices above

		Because the equations are too difficult
		Because we agreed not to use Calculus in this course
		Because it would be zero for any value of x
		Because it would 1.0000 for any value of x
		All of the choices above
		None of the choices above

		Because the PDF is used to determine the Z score
		Because we use the CDF to calculate probabilities
		Because we must keep in mind that our calculations will be wrong to some extent if the shape of our data distribution differs from the shape defined by the PDF of the model we are using
		Because we could never remember the calculus involved in finding the area under a curve defined by the PDF
		All of the choices above
		None of the choices above