The scores on a psychology exam were normally distributed with a mean of 67 and a standard deviation of 6. a failing grade was anything 2 or more standard deviations below the mean what was the cutoff for the faling score? approximately what percentage did the students fail?

12 is 33 1/3% of 36 what is the whole

How to determine whether two known pairs of points are on the same line.

The equation of a circle is (x + 4)2 + (y + 6)2 = 16. determine the length of the radius. 10 4 16 8 my flower basket delivers flowers within a 20 mile radius of their store. if this area is represented graphically, with my flower basket located at (5, 2), what is the equation that represents the delivery area? (x - 2)2 + (y - 5)2 = 20 (x - 5)2 + (y - 2)2 = 20 (x + 5)2 + (y + 2)2 = 400 (x - 5)2 + (y - 2)2 = 400