A company makes plastic cups. 4 samples of 15 cups were taken from an ongoing process to establish a p chart for control. The samples and the number of defectives in each are shown in the following table. What upper and lower control limits would give a 3% alpha risk? [0,0.3233] [0,0.7265] [0,0.5717] [0,0.3760] [0,0.4559]