Refer to the American Journal of Sociology (Jan. 2014) study of the characteristics of antiwar demonstrators in the United States, Exercise 2.106 (p. 77). Based on data collected for over 5,000 antiwar demonstrators over a recent 3-year period, the researchers found that the mean number of protest organizations joined by the demonstrators was .90 with a standard deviation of 1.10 and a median of 1. Explain why x, the number of protest organizations joined by a randomly selected demonstrator, cannot be exactly normally distributed?