1. In constructing control limits for a p-chart, ten samples each of size 100 is selected. The total number defects in all 10 samples were 6. From the 10 samples, the average proportion defect is, a. 60% b. 6% c. 0.6% d. 0.06%

2. You want to determine the upper control line for a p-chart for quality control purposes. You take several samples of a size of 100 items in your production process. From the samples you determine the average fraction defective is 0.05 and the standard deviation is 0.02. If the desired confidence level is 99.74 percent, then the resulting UCL value for the line is about, a. 0.39 b. 0.11 c. 0.06 d. 0.05

3. The defect rate for a product has historically been about 2.0%. If the sample size is 100 and the desire confidence level is 99 percent, then the lower and upper control limits (LCL,UCL) for the p-chart are about, a. (0.00, 0.043) b. (0.00, 0.056) c. (0.00, 0.062) d. (0.02, 0.08)

4.You want to determine the control lines for a p-chart for quality control purposes. If the total number of defects from all samples is 2,500, the number of samples is 100, and the sample size is 50, which of the following would be about the standard deviation used in developing the control lines? a. 0.4900 b. 0.2499 c. 0.1556 d. 0.0707