(a) A certain machine makes electrical resistors having a mean resistance of 40 ohm and a standard deviation of 4 ohms. Assuming that the resistance follows a normal distribution and can be measured to any degree of accuracy, the resistors are acceptable only if fallow the specification which is 30 ohm to 50 ohm. (i) What percentage of resistors will go to scrap? (ii) Find the probability that a resister has more than 50 ohm resistance.

(a) A certain machine makes electrical resistors having a mean resistance of 40 ohm and a standard deviation of 4 ohms. Assuming that the resistance follows a normal distribution and can be measured to any degree of accuracy, the resistors are acceptable only if fallow the specification which is 30 ohm to 50 ohm. (i) What percentage of resistors will go to scrap? (ii) Find the probability that a resister has more than 50 ohm resistance.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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