A company is analyzing the prices at which its items are sold. Results for 600 items are presented in the relative frequency table below. Item price Class Relative Frequency

Item price Class Relative Frequency

[.5, 1.5) .06

[1.5, 2.5) .30

[2.5, 3.5) .20

[3.5, 4.5) .15

[4.5, 5.5) .14

[5.5, 6.5) .10

[6.5, 7.5) .05

a. Graph the relative frequency histogram.

b. Compute the number of items within each class.

c. Graph the frequency histogram.