5. Access the R built-in dataset "mtcars" in RStudio using the command "data(mtcars)". Read the documentation of the dataset and the description of the variables here: https://www.rdocumentation.org/packages/datasets/versions/3.6.2/topics/mtcars. (a) Compute the mean, s.d., min, median, max of the horsepowers of cars. Generate a histogram and a boxplot of this variable. (b) Construct a new variable, "power-to-weight ratio" (you may choose a variable name as you wish in R), as the ratio of horsepower over weight. Report its minimum, 1st quartile, median, 3rd quartile and maximum. (c) Construct a new variable, "average quartermile speed", as 1 over the time it takes for a car to finish a quarter mile. Generate a histogram of this variable with 6 bins