Question $23(1$ point$)$

An operator trainee is attempting to monitor a filling process that has an overall average of $813$ cc$.$ The average range based on the samples is $16$ cc$.$ If she uses a sample size of $12($for each sample$),$ calculate LCL for the R$-$chart with $3-$sigma limit $($i$.$e$.,$ with confidence level $99\mathrm{.}73\%).$

Note:

$1-$ Only round your final answer. Round and enter your final answer with $2$ decimal places.

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Question $23$ options:

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