What are the demographics of Internet usage (the percentage of the population) in these regions? Use a spreadsheet program to create a bar graph to illustrate the growth of Internet usage in Europe in at least five countries during the period 2000–2019

Assume that there is a 4% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on three independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?