A player salaries have increased, the cost of attending baseball games has increased dramatically. The file (BBCOST2011) contains the cost of four tickets, two beers, four soft drinks, four hot dogs, two game programs, two baseball caps and the parking fee for one car for each of the 30 Major League Baseball teams in 2011:
174, 339, 259, 171, 207, 160, 130, 213, 338, 178, 184, 140, 159, 212, 121, 169, 306, 162, 161, 160, 221, 226, 160, 242, 241, 128, 223, 126, 208, 196
Describe whether the data appear to be approximately normally distrusted by ..
a. Comparing data characteristics to theoretical properties.
b. Constructing a normal probability plot.