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Unformatted text preview: 7200 RPM, has an average SEEK rand = 10 msec, and a date transfer rate of 10MB/sec. Assume that the controller time is 0.1 msec. What is the average service time for the disk? Show our work 4. (20 points) Calculate the expected value, second central moment and standard deviation for the following probability density function. Evaluate for a = 0 and b = 10. Show our work . ⎪ ⎪ ⎩ ⎪ ⎪ ⎨ ⎧ ≤ ≤ − = otherwise b x 1 ) ( a a b x f 5. (10 points). Assume you have the following data. Calculate the zscore values. Show our work . DATA: (1000, 1150), (50, 55), (3300, 2000), 6. (10 points) Assume that you have a pocket full of coins, specifically one penny, one nickel, one dime, one quarter and one dollar. Calculate the expected value, second central moment and standard deviation associated with picking one coin at random from you pocket. Show our work ....
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 Spring '08
 Michel
 Standard Deviation, Variance, probability density function, open notes exam

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