Find resulting sample standard deviation

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The amount of lateral expansion (mils) was determined for a sample of ns(a)2(b)  = 11 pulsed-power gas metal arc welds used in LNG ship containment tanks. The resulting sample standard deviation was  = 2.5 mils.

Assuming normality, derive a 90% CI for σ.

Assuming normality, derive a 90% CI for σ.

Reference no: EM132849243

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