The mean diameter of a batch of bolts is 9.711mm and the standard deviation of the batch is 0.126mm
The tolerance for this batch of components is 9.73mm to 9.97mm.
In a batch of 2000 bolts, determine the following:
a) The percentage of bolts rejected assuming the bolts are normally distributed.
b) The number of bolts greater than 9.91mm
c) The number of bolts less than 9.4mm
It's a tricky one!