(Answered) Question the percent of products that meet specifications

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Question: The percent of products that meet specifications. If the water resistance readings of individual jackets follows a Normal distribution, we can describe capability by giving the percent of jackets that meet specifications. The old specifications for water resistance are 1000 to 4000 mm. The new specifications are 1500 to 3500 mm. Because the process is in control, we can estimate that water resistance has mean 2750 mm and standard deviation 384 mm.

(a) What percent of jackets meet the old specifications?

(b) What percent meet the new specifications?

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