How many parts should be sampled in order to estimate the population mean to within ±0.1 millimeter (mm) with 95% confidence? Previous studies of this machine have indicated that the standard deviation of lengths produced by the stamping operation is about 1.8 mm. type your answer...

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A: Givensample size(n)=430x=121sample proportion(p^)=xn=121430≅0.281confidence level=94%

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A: From the given information, fx=630x41-x4, for 0&lt;x&lt;1 Consider, μ=∫01xfxdx  =∫01x*630x41-x4dx…

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