4.3.21 Queston Hep Assume that there a 11% tate of disk drive falure in a year.

Question

4.3.21 Queston Hep Assume that there a 11% tate of disk drive falure in a year. a. I al your computer data is stored on a hard disk dive with a copy stored on a second hard disk dive, what is the probablity that dung a year you can aod catastrophe with at least one working drive? one working drive? a.with two harddisk drves, the probability that catastrophe can be anded is b. f copes d al pur cmpider das ane stored n te independnt ha dsk dres,what polabily hr duinga yer you can aoid calasthe Round to Sour decimal places as needed) Enter your answer in the anseer box and then click Check Answer remaining to search

Explanation / Answer

Ans:

a)P(catastrophe avoided)=P(atleast one working)=1-P(none working)

=1-0.11*0.11=1-0.0121=0.9879

b)P(ateast one working)=1-P(none working)=1-0.11*0.11*0.11=1-0.001331=0.998669

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