4.22 The paper referenced in the previous exercise also gave data on the actual amount poured (in ml) into a short, wide glass for bartenders who were asked to pour 44.3 ml (1.5 ounces).

89.2 68.6 32.7 37.4 39.6 46.8 66.1 79.2 66.3 52.1 47.3 64.4 53.7 63.2 46.4 63.0 92.4 57.8

a. Compute and interpret the values of the mean and standard deviation.

b. What do the values of the mean amount poured in the short, wide glass and the mean computed in the previous exercise suggest about the shape of glasses used?