Boxes of Honey-Nut Oatmeal are produced to contain 16.0 ounces, with a standard deviation of 0.15 ounce. For a sample size of 64, the 3-sigma x overbar chart control limits are:
a) Upper Control Limit (16.0) and Lower Control Limit (16.0)
b) Upper Control Limit (16.075) and Lower Control Limit (15.925)
c) Upper Control Limit (16.225) and Lower Control Limit (15.775)
d) Upper Control Limit (16.3) and Lower Control Limit (15.7)