Assume The females have a possible talk normally distributed with a mean of 72.0 bpm and a standing ovation of 12.5 bpm complete potato see below If an adult female is randomly selected find the probability that her pulse rate is between 65 bpm and 79 bpm

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?