Setup

A$.$ Load libraries

Load the wooldridge library, along with knitr. Then, create an object called wage$2$ using the

following code: wage$2=$ wooldridge::wage$2.$ No need to write an answer in text afterwards, just

the code will do$.$

$2$

B$.$ Show installed packages

Run the code installed.packages$()[,$c$(1,3)].$ Here, the function installed.packages$()$

returns a matrix with a lot of information on what packages you have installed. We subset to just

column $1$ and $3,$ the name and version.

This might be quite long, especially if you$$ve used R before.

That$$s OK$.$ No need to write an answer in text afterwards, just the code will do$.$