PLEASE SHOW COMPLETE WORK FOR NUMBER 1, 2, AND 3 A database file has 6,000,000 r

Question

PLEASE SHOW COMPLETE WORK FOR NUMBER 1, 2, AND 3

A database file has 6,000,000 records, which occupy disk storage at a density of 12 records per block. A daily update modifies 3.5 percent of the file and we assume that the updates are distributed uniformly across the records. Weekly the system must rewrite any block, which has an update to any of the records in the block. in the lines provided. The probability that an individual block will be rewritten p = Let X denote the Binomial Distribution associated with all the blocks in the file. The parameters of this distribution, n, p, are: The average number of blocks rewritten mu x =

Explanation / Answer

1. The probability that an individual block will be re-written, p = 3.5/100 = 0.035.

2. Binomial parameters: n = 6000000/12 = 500000 , p = 0.035.

3. Average number of blocks re-written = 500000 * 0.035 = 17500.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.