Question: The thickness of a conductive coating in micrometers has a density function of 600x-2 for 100 m < x <120 m. (a) Determine the mean

The thickness of a conductive coating in micrometers has a density function of 600x-2 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?

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