A hospital administrator has been keeping track of the number of times patients developed staph infections following surgery. Early in the year, the administrator required all medical staff to read a booklet titled Fighting Staph, and tripled the number of handsanitizer wall dispensers throughout the hospital.

Data on the number of staph infections before and after the changes are presented here. Did the changes work? Is the hospital safer for post-surgical patients?

Construct a line chart to display these two sets of data

(use graphing software if available), and write a paragraph describing the changes.

Month 12 Months Before 12 Months After January 23 25 February 25 21 March 20 18 April 19 12 May 15 9 June 17 10 July 24 11 August 28 15 September 23 17 October 20 14 November 21 18 December 22 20