I show you what the computer has processed and you have to look at my screen to see what I have for you. What am I?

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?

Which steps will open the system so that you can enter a question and do a search for

Think of a spreadsheet as a giant calculator spread of paper chart data collector