A machine that makes hose fittings is set for a tolerance of (0.25 mathrm{~cm}) (i.e., the standard

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A machine that makes hose fittings is set for a tolerance of $0.25 \mathrm{~cm}$ (i.e., the standard deviation) and a mean diameter of $12 \mathrm{~cm}$. A random sample of 12 fittings (in $\mathrm{cm}$ ) is given in Table 4.7.

Find and interpret $99 \%$ confidence intervals for both the population mean diameter and the population variance of the hose fittings.

Table 4.7

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Applied Statistical Inference With MINITAB

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2nd Edition

Authors: Sally A. Lesik

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Question Posted: Mar 15, 2024 03:00 AM

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A machine that makes hose fittings is set for a tolerance of (0.25 mathrm{~cm}) (i.e., the standard

Question:

Mean Diameter (in Centimeters) for a Random Sample of 12 Hose Fittings 12.24 12.64 12.15 12.36 12.60 12.02 12.18 11.95 11.95 12.08 12.23 11.89

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Applied Statistical Inference With MINITAB

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