As part of the marketing team at an Internet music site, you want to understand who your customers are. You send out a survey to 25 customers (you use an incentive of $50 worth of downloads to guarantee a high response rate) asking for demographic information. One of the variables is the customer’s age. For the 25 customers the ages are:

20 32 34 29 30 30 30 14 29 11 38 22 44 48 26 25 22 32 35 32 35 42 44 44 48

a) Make a histogram of the data using a bar width of 10 years.

b) Make a histogram of the data using a bar width of 5 years.

c) Make a relative frequency histogram of the data using a bar width of 5 years.