Question: Capitalists Incorporated (CI) is concerned that their employees disregard company policy and that rampant lateness is affecting productivity. Each day for two weeks they take a record the morning arrival time of 250 random employees to determine the extent of the problem. The results have been recorded as follows:
a) Calculate the upper and lower p-control limits based on the above information.
b) Based on these results, the CEO sent out a memo to all employ reminding them of the time they are expected to start working. The sample results from the next five days after the memo was sent were 16, 14, 18, 17 and 21 late employees respectively. Did the memo help to improve the situation? Why?