Of all failures of a certain type of computer hard drive, it is determined that in 20%
Question:
Of all failures of a certain type of computer hard drive, it is determined that in 20% of them only the sector containing the file allocation table is damaged, in 70% of them only nonessential sectors are damaged, and in 10% of the cases both the allocation sector and one or more nonessential sectors are damaged. A failed drive is selected at random and examined.
a. What is the probability that the allocation sector is damaged?
b. What is the probability that a nonessential sector is damaged?
c. If the drive is found to have a damaged allocation sector, what is the probability that some nonessential sectors are damaged as well?
d. If the drive is found to have a damaged nonessential sector, what is the probability that the allocation sector is damaged as well?
e. If the drive is found to have a damaged allocation sector, what is the probability that no nonessential sectors are damaged?
f. If the drive is found to have a damaged nonessential sector, what is the probability that the allocation sector is not damaged?
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Let A denote the event that the allocation sector is damaged and let N denote the ...View the full answer
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