Additional Algo $9-4$ Conformance Analysis

A quality$-$control techniclan has been monitoring the output of a milling machine. Each day, the techniclan selects a random sample of

$20$ parts to measure and plot on the control chart. Over $10$ days, the average diameter was $1\mathrm{.}156$ millimeters wlth a standard deviation

of $0\mathrm{.}03$ millimeters.

What Is the upper control IImIt $($UCL$)$ for an X$-$bar chart of this data?

Note: Round your answer to $4$ decimal places.