Tests on the breaking strengths if 10 cables were made and showed a mean strength of 1200 psf and a standard deviation of 100 psf. Estimate the (a) mean and the (b) standard deviation of the population of all the cables being produced by the company.
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Expert's answer
2020-05-14T17:41:02-0400
a)mean=μ=1200 pcf
b) "\u03c3=\\sqrt{s^2*(n-1)\/n}= \n\\sqrt{100^2*9\/10}=94.868 pcf"
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