Table $3\mathrm{.}1$ to establish control limits for sample means and ranges for the car wash process.

$2.$ At Isogen Pharmaceuticals, the filling process for its asthma inhaler is set to dispense $150$ milliliters $(ml)$ of steroid solution per container. The average range for a sample of $4$ containers is $3ml.$ Use Table $3\mathrm{.}1$ to establish control limits for sample means and ranges for the filling process.