A2011 poll by the pew research center found that 66% of young women ages 18 to 34 rated a high-paying career high on their list of life priorities. let's assume for this problem that 66% of the female students in your high school consider a high-paying career as a priority. you plan to take a sample of 75 female students. if you calculate the variance of the sampling

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?