You must use R; Make use of the return dataset in wooldridge library in order to address the following questions. Before you address those questions, however, you must make sure that you call the wooldridge library as part of your code's preamble by typing: library(wooldridge). Also, call the tidyverse library by typing: library(tidyverse). Then, download the return data on your device using the following command: data(return, package="wooldridge"). Lastly, put the downloaded data into a, so called, tibble (a tidyverse tool) by typing: as_tibble(return)

1. Estimate the parametersa (the intercept) andb (the slope) in the model below: