Practice question #2 The melting point of each of 31 samples of a certain brand of hydrogenated vegetable oil was determined, resulting in a sample mean of 95.5 degrees and a sample standard deviation of 1.9. Construct a 99% confidence interval for the melting point of this brand of hydrogenated vegetable oil. Write out your formula and verify size is appropriate for this method. Round answers to 1 decimal place.  Verify size is appropriate for method: Interval:  Interpret the interval in the context of the problem: If we had instead calculated a 95% confidence interval, would the interval have been wider or narrower? You do not have to calculate it.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
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Practice question #2

  1. The melting point of each of 31 samples of a certain brand of hydrogenated vegetable oil was determined, resulting in a sample mean of 95.5 degrees and a sample standard deviation of 1.9. Construct a 99% confidence interval for the melting point of this brand of hydrogenated vegetable oil. Write out your formula and verify size is appropriate for this method. Round answers to 1 decimal place. 

Verify size is appropriate for method:

Interval: 

Interpret the interval in the context of the problem:

If we had instead calculated a 95% confidence interval, would the interval
have been wider or narrower? You do not have to calculate it. 

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