Ascientist is studying fish population in an area of the ocean that measures 18,314 square miles. he wants to divide the are into 87equal size partitions to make the study more manageable estimate how large each area will be

Assume that there is a 11% 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 four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?