The enclosed file hw116.txt contains historical data of world population of human. Write a script to read in the data and plot the world population vs. year. Use the following specific format:

a) use log scale for the y?axis (population);

b) use white figure background

c) use linewidth 3, and purple color [0.5, 0, 0.5] for the line plot.

d) use font size 18, bold font weigh for axes labels and title

see an example plot below:

World Population 10 10 10 -10 10 10000 -8000 -6000 -4000 -2000 0 2000 4000 Year