The defect rate for your product has historically been about 1.50%. For a sample size of 500, the upper and lower 3-sigma control chart limits are:
UCL Subscript p = ____(enter your response as a number between 0 and 1, rounded to four decimal places).
LCL Subscript p = ____ (enter your response as a number between 0 and 1, rounded to four decimal places).