Answer the following questions a$,$ b$,$ c$,$ d with true or false

We consider the dataset 'hydrolysis.txt$\text{'},$ which looks at the relationship between the content of the amino acid

serine as a function of time $($hour$)$ in hours for five different types of feed. Throughout this task, we assume

that the mean of serine can be described by a linear normal model with mean function

$($ feed, hour $)={}_{\text{f}\text{e}\text{e}\text{d}}+*$ hour

corresponding to 'model$2\text{'}$ below.

my$\_$data read.table $($file $="../../$data$/$hydrolysis$.$txt$",$ header $=$ T

head$($my$\_$data$)$ # de forste $6$ injer i datasettet

## feed hour serine

#t $1$ barley $8,4\mathrm{.}47$

## $2$ barley $16,4\mathrm{.}34$

## $3$ barley $24,4\mathrm{.}22$

itt $4$ barley $32,4\mathrm{.}10$

## $5$ barley $72,3\mathrm{.}48$

## $6$ barley $84\mathrm{.}46$

model lm$($serine $*$ feed $*$ hour, data $=$ my$\_$data$)$

model gerine $*$ feed $+$ hour, data $=$ my$\_$data$)$

W$"$ get$\_$regression$\_$table $($model$2)$

## # A tibble: $63$

## tern estinate std$\_$error

## $$chr$>\frac{?}{?}\frac{\text{\#}}{\text{\#}}1$ intercept $4\mathrm{.}64,0\mathrm{.}025I\frac{?}{?}$# $2$ feed: fish $-0\mathrm{.}262,0\mathrm{.}03\frac{?}{?}\frac{\text{\#}}{\text{\#}}3$ feed: mais $0\mathrm{.}709,0\mathrm{.}03-0\mathrm{.}072,0\mathrm{.}03\frac{?}{?}\frac{\text{\#}}{\text{\#}}5$ feed: soy $1\mathrm{.}06,0\mathrm{.}03\frac{?}{?}\frac{\text{\#}}{\text{\#}}6$ hour $-0\mathrm{.}017,0$hat$()4\mathrm{.}64-0\mathrm{.}017H_0$:$=0tt44=50-6($ feed, hour $)=+{}_{\text{f}\text{e}\text{e}\text{d}}*$ hour