A with-in-run precision experiment is done using 20 aliquots of control, the results are: 130 129 131 127 132 130 131 128 130 131128 125 124 133 129 132 135 136 130 133 The manufacturer lists the in run precision claims as follows: n=20, mean=140 SD=4.90 and CV=3.5% What is the value for F that can be compared to the critical F to determine the significance of the difference in precision observed in the lab vs. by the manufacturer? a. 1.64 b. 0.61 c. 0.64 d. 2.70 Please explain because I totally don\'t get it.... Solution b.