Working with R: The file Fitness.csv contains information on $417$ individuals on how much they exercise $("$Exercise$"),$ their marital status $("$Married$"),$ and their annual income $("$Income$").$

$($a$)(1$pt$)$ Give the exercise status, the marital status, and the annual income for the $208$th and the $417$th individual. Also provide the line or lines of $R$ code that allows you to access this information.

$($b$)(1$pt$)$ Find the marital status of the $6$th$,$ the $106$th$,$ and the $406$th individual. Also provide the line or lines of $R$ code that allows you to access this information.

$($c$)(1$pt$)$ Find the annual income of the $325$th$,326$th$,327$ th$,328$th$,$ and the $329$ th individual.

$($d$)(1$pt$)$ Write two lines of code: one that changes the marital status of the $3$rd observation to "Broccoli" and one that changes the annual income of the $5$ th observation to $$1,000,000.$

$($e$)(1$pt$)$ Write a line of $R$ code that creates a vector named "cooldata" that contains the numbers $6,1,$ and $3,$ in that order.

$($f$)(1$pt$)$ Write the two sentences in the "Description" section of the $R$ help file for the $sd()$ function.

Understanding $R$ input: A student writes the following line of $R$ code:

example $=c(1,5,-4,3,-2,8,13,-2)$

$($a$)(0\mathrm{.}5$ pts each$)$ Give the output of the following $R$ commands.

i$.$ example $[5]$

ii$.$ example $-3$

iii. example $c(1,4,5)$

iv$.$ example $2$:$4$

v$.$ example $-c(3,6,7)$

$($b$)(0\mathrm{.}5$pts each$)$ Explain why each of the following commands will throw an error.

i$.$ Example $[5]$

ii$.$ example$[9]$

iii example $1,3,5,6$