\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
For a high-precision engineering part, a quality control manager requires a \(99\pourcent\) confidence interval for the mean diameter.
Using your calculator, determine the critical value \(z\) required for this interval, rounded to two decimal places.
\(z \approx\)