an attached file called mountains.txt contains data about sample mountains in a certain place

Read the attached le, assigning the result to the object Mountains. (b) (2 points) Examine the row and column names of the Mountains object. (c) (2 points) Compute sums of the columns of the Mountains object. (d) (4 points) Find the min, max, mean and median of of the mountains heights? (e) (2 points) Evaluate the variance and the standard deviation of the mountains height. (f) (2 points) Construct a scatterplot matrix for the loaded data. (g) (1 point) Make the columns of the Mountains object available by name. (h) (2 points) Construct a scatter plot with the Distance as the horizontal axis and the Time as the vertical axis. (i) (5 points) Compute a linear regression of time against distance using the built-in functions. (j) (3 points) Add the least squares regression line to the gure plotted in (h).