Specifications on a normally distributed dimension

are $600\backslash$pm $20.$ and R charts are maintained on this

dimension and have been in control over a long

period of time. The parameters of these control

charts are as follows $($n $=9).$

Chart s Chart

UCL $=616$ UCL $=32\mathrm{.}36$

Center line $=610$ Center line $=17\mathrm{.}82$

LCL $=604$ LCL $=3\mathrm{.}28$

$($a$)$ What are your conclusions regarding the capability of the process to produce items within

specifications?