Rocky Natore, owner of Rocky's Pizza, has a policy to put 36 slices of pepperoni on a large pizza. Natore recently hired two college students to work part-time making pizzas and decided to observe them at their jobs for a few days.
Natore gathered the following data on number of pepperoni slices being used on the pizzas:
11:00 A.M. to 5:00 P.M.
13 pizzas were made containing the following number of pepperoni slices: 35, 37, 41, 33, 36, 36, 35, 39, 44, 37, 36, 36, 35
5:00 P.M. to 11:00 P.M.
25 pizzas were made containing the following number of pepperoni slices: 35, 37, 41, 42, 36, 39, 44, 43, 44, 37, 48, 36, 35, 40, 39, 41, 29, 36, 36, 42, 45, 44, 37, 36, 36
a. Prepare a control chart for pepperoni slices.
b. What information does the chart provide to Natore?