QUALITY AND PERFORMANCE

CHAPTER $3$

$129$

$15.$ Janice Sanders, CEO of Pine Crest Medical Clinic, is concerned over the number of times patients must wait more than $30$ minutes beyond their scheduled appointments. She asked her assistant to take random samples of $64$ patients to see how many in each sample had to wait more than $30$ minutes. Each instance is considered a defect in the clinic process. The table below contains the data for $15$ samples.

$\backslash$table$[[$Sample$,$Number of Defects$],[1,5],[2,2],[3,1],[4,3],[5,1],[6,5],[7,2],[8,3],[9,6],[10,3],[11,9],[12,9],[13,5],[14,2],[15,3]]$

a$.$ Assuming Janice Sanders is willing to use threesigma control limits$,$ construct a $p-$chart.

b$.$ Based on your $p-$chart and the data in the table, what can you conclude about the waiting time of the patients?

$16.$ Representatives of the Patriot Insurance Company take