When +/- 2 standard deviation control limits are used in a process control chart, which of the below statements are true? Multiple choice question. Approximately 95.5% of the time random data points will fall within (inside) the upper and lower control limits. 99.7% of the time random data points will fall beyond (outside) the upper and lower control limits. Approximately 68% of the time random data points will fall within (inside) the upper and lower control limits