Question: Copy Figure 16 and add the standard score scale z = (x - np)/np(1 - p) underneath the x-axis for n = 5, 12, 25.

Copy Figure 16 and add the standard score scale z = (x - np)/√np(1 - p) underneath the x-axis for n = 5, 12, 25. Notice how the distributions center on zero and most of the probability lies between z = -2 and z = 2.

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