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The amount of lateral expansion (mils) was determined for a sample of n = 8 pulsed-power gas metal arc welds used in LNG ship containment tanks. The resulting sample standard deviation was s = 2.83 mils. Assuming normality, derive a 95% CI for 0'2 and for 0'. (Round your answers to two decimal places.) CI for 0'2 ( , )mils2 CI for a ( , ) mils