4 16 of 20 (20 This Test: 20 pts poss that there is a 11% rate ofdesk drive fail

Question

4 16 of 20 (20 This Test: 20 pts poss that there is a 11% rate ofdesk drive failure in a year a. Iif al your computer data is stored on a hard disk drive with a copy stored on a second hard disk dive, what is the probability that during a year you can avoid calastrophe wth at weast one working dnve data are stored on three independent hard disk dnives, what is the probabity that durng a year you can avoid catastrohewith at least one wonking b. if copies of all your computer Round to four decimal places as needed.) b. wth three hard disk drives, the probability that catastrophe can be avoided is 10013 (Round to six decimal places as needed) a de O Type here to search 8 8 5

Explanation / Answer

Solution:- Given that p = 11% = 0.11

a. P(two hard disk drives) = 0.11*0.11 = 0.0121

b. P(three hard disk drives) = 0.11*0.11*0.11 = 0.001331

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