The location of a Normal distribution is determined by its mean , whereas its shape is determined by the standard deviation . To see the effect of changing , you are going to graph two Normal probability density functions, one with  = 100 and another with  = 115, both having  = 10. Recall that for each distribution the first value should be 3 = 30 below the mean, and the last value should be 3 above the mean. When MINITAB creates the X values for you, for both distributions set the data IN STEPS OF 1. Overlay the two density functions on the same graph (in MINITAB), and paste in the box below. (I just need the steps on how to do this on minitab)