As player salaries have increased, the cost of attending basketball games has increased dramatically. The file NBACost contains the cost of four tickets purchased on the secondary market, two beers, two soft drinks, four hot dogs, and one parking space at each of the 30 National Basketball Association arenas during a recent season.

Source: Data extracted from www.nerdwallet.com/blog/which-nba-teamsmost-affordable.

Decide whether the data appear to be approximately normally distributed by

a. Comparing data characteristics to theoretical properties.

b. Constructing a normal probability plot.