Question content area

Part $1$

The specifications for a plastic liner for a concrete highway project calls for thickness of

$4\mathrm{.}04\mathrm{.}0$

mmplus or minus$0\mathrm{.}100\mathrm{.}10$

mm$.$ The standard deviation of the process is estimated to be

$0\mathrm{.}020\mathrm{.}02$

mm$.$

The upper specification limit for this product$=$

enter your response here

mm $($round your response to three decimal$$ places$).$

Part $2$

The lower specification limit for this product$=$

enter your response here

mm $($round your response to three decimal$$ places$).$

Part $3$

The process is known to operate at a mean thickness of

$4\mathrm{.}04\mathrm{.}0$

mm$.$ The process capability index

$($Upper C Subscript pkCpk$)$

$=$

enter your response here

$($round your response to three decimal$$ places$).$

Part $4$

The upper specification limit lies about

$$

$$

$5$

$4$

$3$

standard deviations from the centerline$($mean thickness$).$