Two students, raymond and shauna, are trying to get city council members to vote for a new park along the river. 2/6 of the 24 council members say they already support the idea, but that's not enough. at least 13 council members must support the idea before the park is approved. how many more city council members must raymond and shauna convince? 8 7 6 5

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?