Samples ofn= 100 items were selected hourly over a 100-hour period, and the sample proportion of defectives was calculated each hour. The mean of the 100 sample proportions was0.035.

(a) Use the data to find the upper and lower control limits for apchart. (Round your answers to three decimal places.)

UCL=

LCL=

2 The sample means were calculated for 40 samples of sizen=8for a process that was judged to be in control. The means of the 40 values and the standard deviation of the combined320measurements were=151.1ands=4.3,respectively.

(a) Use the data to determine the upper and lower control limits for anxchart. (Round your answers to two decimal places.)

UCL=

LCL=