Refer to the Chemical Engineering Progress (Jan. 2005) study of the rate at which a spilled volatile
Question:
a. Find a 99% confidence interval for the mean mass of all spills with an elapsed time of 15 minutes. Interpret the result.
b. Find a 99% prediction interval for the mass of a single spill with an elapsed time of 15 minutes. Interpret the result.
c. Compare the intervals you found in parts a and b. Which interval is wider? Will this always be the case? Explain.
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