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villain villain
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A year ago
A heat transfer process designed to cool a large electric motor must maintain temperature as steady as possible. A sample of 10 temperature measurements of cooling effluent from the process yields a standard deviation of 0.63°C. Assuming the underlying distribution is normal, what is a 90% confidence interval for the process standard deviation?


(0.579, 1.306)



(0.211, 1.074)



(0.459, 1.036)



(0.433, 1.150)

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
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packar11packar11
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A year ago
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