Question $3(2\mathrm{.}75$ point; $0\mathrm{.}25$ pts per blank, $0\mathrm{.}75$ for sereenshot of correct $R$ code and output$)$: Use a the aggregate $()$ function function in R to calculate the mean and SD of mob and aud for each diet type $($hawker and herbivore$).$ Round the numerical values to the nearest $0\mathrm{.}01($using the round $1$ function in R$).$ Fill out the table below, then paste a screenshot$/$screenshots of your $R$ output showing how you arrived at all values into this document.

$\backslash$table$[[,$Hawkers,Herbivores$],[$Variable$,$Mean,SD$,$Mean,SD$],[$Main olfactory bulb,,,,If$],[$Auditory nucleus,,,,$(]]$