Four distributions labeled a b c and d are represented below

Four distributions, labeled (a), (b), (c), and (d), are represented below by their histograms. Each distribution is made of 9 measurements. Without performing any calculations, order their respective means mu a, mu b, mu c, and mu d. Enter the four subscripts appropriately below.

Solution

u_{a = 70/9 = 7.7}

u_{b = 71/9 = 7.8}

u_{c = 68/9 = 7.5}

u_{d = 69/9 = 7.6}