You must submit a report $($to management$)$ analyzing the data that is presented below via the portal by the published cut$-$off time.

A research chemist wants to understand how several predictors are associated with the wrinkle resistance of cotton cloth. The chemist examines $32$ pieces of cotton cellulose produced at different settings of curing time, curing temperature, formaldehyde concentration, and catalyst ratio. The durable press rating, Rating as a measure of wrinkle resistance, is recorded for each piece of cotton.

He had heard about multiple regression but he was skeptical so he added a column of random numbers to his original observations. Conc Ratio Temp Time Random Rating

$8410012\mathrm{.}931651211\mathrm{.}4$

$2418076\mathrm{.}6113181812\mathrm{.}25$

$7418015\mathrm{.}6080161444\mathrm{.}6$

$10712054\mathrm{.}3039257264\mathrm{.}9$

$7418057\mathrm{.}6254900264\mathrm{.}6$

$7718011\mathrm{.}8924639784\mathrm{.}75$

$71314010\mathrm{.}3918634714\mathrm{.}6$

$5416071\mathrm{.}630198834\mathrm{.}5$

$4714031\mathrm{.}6323566524\mathrm{.}8$

$5110074\mathrm{.}7017739771\mathrm{.}4$

$81014038\mathrm{.}2333760834\mathrm{.}7$

$2410031\mathrm{.}8114807411\mathrm{.}6$

$41018039\mathrm{.}3534711584\mathrm{.}5$

$6712074\mathrm{.}9937113954\mathrm{.}7$

$101318030\mathrm{.}3416209494\mathrm{.}8$

$41016050\mathrm{.}9741484234\mathrm{.}6$

$41310078\mathrm{.}731880734\mathrm{.}3$

$101012077\mathrm{.}5475470664\mathrm{.}9$

$5410018\mathrm{.}8841884841\mathrm{.}7$

$81314010\mathrm{.}0655786584\mathrm{.}6$

$10118012\mathrm{.}0923246482\mathrm{.}6$

$213140115\mathrm{.}389656313\mathrm{.}1$

$613180716\mathrm{.}890935014\mathrm{.}7$

$7112070\mathrm{.}3962726362\mathrm{.}5$

$51314015\mathrm{.}4610726174\mathrm{.}5$

$8116078\mathrm{.}3391631522$

$4118073\mathrm{.}6419572771\mathrm{.}8$

$6116011\mathrm{.}9781528691\mathrm{.}5$

$4110010\mathrm{.}8330603681\mathrm{.}3$

$71010079\mathrm{.}3420257184\mathrm{.}6$

$4110010\mathrm{.}3853446111\mathrm{.}4$

$4110011\mathrm{.}6092832721\mathrm{.}45$