(a) Determine the mean and variance of the coating thickness. (b) If the coating costs $0.50 per micrometer of thickness on each part, what is the average cost of the coating per part?

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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4-47. + The thickness of a conductive coating in microm-
eters has a density function of 600x for 100 µm <x<120 µm.
(a) Determine the mean and variance of the coating thickness.
(b) If the coating costs $0.50 per micrometer of thickness on
each part, what is the average cost of the coating per part?
4-59. An e-mail message will arrive at a time uniformly dis-
Transcribed Image Text:4-47. + The thickness of a conductive coating in microm- eters has a density function of 600x for 100 µm <x<120 µm. (a) Determine the mean and variance of the coating thickness. (b) If the coating costs $0.50 per micrometer of thickness on each part, what is the average cost of the coating per part? 4-59. An e-mail message will arrive at a time uniformly dis-
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