Confidence interval for the mean diameter
Doug needs to construct a 98% confidence interval for the mean diameter of 3 inch schedule 40 drain pipe. He samples 25 pipes at the local home goods store. The sample has a mean of 2.897 inch with a standard deviation of 0.098 inch.
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A piston-cylinder contains 0.1kg of superheated steam at 180 degrees celsius and 5 bars. What is the final temperature and the change in internal energy for the steam?
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