Answered: The number of read/write cycles that a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

The number of read/write cycles that a given brand of USB stick can undergo before becoming unusable is normally distributed with a mean of 1867518675 and a standard deviation of 21602160.

What is the probability, to 3 decimal places, that the number of usable read/write cycles of a USB stick is between 16675 and 20675?

To the nearest integer, what number of read/write cycles will only be exceeded by 5% of USB sticks?

An office purchases 108 USB sticks for its employees. What is the probability (to 3 decimal places) that the average number of usable cycles for these 108 USB sticks is less than 18275?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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