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24-05-2023
Mathematics

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Find the 95% confidence interval for the standard deviation of the lengths of pipes if a sample of 21 pipes has a standard deviation of 14.6 inches. a. 124.8 < σ <444.5 b. 192.2 < σ <234.2 c. 11.2 < σ <21.1 d. 11.6<σ< 17.6

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