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

Consider the functions given by

Load the flights dataset from the R$-$package nyflights$13,$ which was used in the first lecture of the course.

library $($nycflights$13)$

head $($flights$,3)$

## # A tibble: $3$ x $19$

## year month day dep$\_$time sched$\_$dep$\_$time dep$\_$delay arr$\_$time

## $\frac{?}{?}\frac{\text{\#}}{\text{\#}}1,2013,1,1,517,515,2,830=1=7$