Please help with question S$,$ a$-$d$,$ with answers, R code and explanations

Questien $5$

The $0$zanoe data frame from the datasets package has $35$ rows and $3$ columns of records of the gowth of orange trees.

Tree $-$ an ondered factior indicating the tree on which the measurement is msde. The ordering is according to incressing masimam dismeber.

age $-$ a numentic vicior giving the age of the beve $($dirys sincu $196$B$/12/31)$

el reusfereace $-$ a numeric vecior of trunk cincumterences $($mm$).$ This is probably "cincumberence at bresot height", standard meseurement in foreoty.

Ueing headiorange$),$ we show the frot couple of observions and plot exicanference vs$,$ ape in the following col:

Wh run the ceil to rex the dats and the plat

head$[$Orange$]$

Parta$)$

Ase, plot the residalab and normal $QO$ plot $($for the reaiduale$)$ by rurning

p$1$at $($abd$,$ which$=1$:$21$

ebservition $i=1,2,n.$

Part b$]$

What are the valuea of calimates $b0=p{0}^{{?}^{{?}^{?}}}$ and $b1=1=?$

Creste A numeric variables b$/$ and bl with corresponding uslues. Do NOT round the values.

Part ej

Part c$)$

round your ansaerl Hint: Uee the command

prediet inod, datn. Erara $($age$=321)$

for appropriately chosen replacement of the symbol $??$

White your snewer as

ans $-$ csonething heres

Part d$]$

Find the $96\%$ confisence interval for $E|Y|x=950.$ You can use the predictlunction with the format

predict inod, datw.Erare $($age$=72),$ datw$=$Orange, interva$1="$ confidence", Leve$1=7?\}$

and replace the two $??$ Eimbols with appropriale valuse.

Create variables $1$ and o which ase the lower and uppor end poims of the deraired imarval. Do NOT round your answers.