Assume that there is a 6​% 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...

Assume that there is a 6​% 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?