The file Work Hours Needed contains the average number of hours worked necessary to afford the cost of three people attending a National Basketball Association (NBA) game, inclusive of parking and food and beverage costs, at each of the 30 NBA arenas during a recent season.
a. Organize these costs as an ordered array.
b. Construct a frequency distribution and a percentage distribution for these costs.
c. Around which class grouping, if any, are the costs of attending a basketball game concentrated? Explain.