Question
The calcium (Ca) content of a powdered mineral substance was analyzed 10 times with the following percent compositions recorded: 0.0271 0.0282 0.0279 0.0281 0.0268 0.0271
The calcium (Ca) content of a powdered mineral substance was analyzed 10 times with the following percent compositions recorded:
0.0271 0.0282 0.0279 0.0281 0.0268
0.0271 0.0281 0.0269 0.0275 0.0276
a. Find a 99% confidence interval for the true calcium content of this substance.
b. What does the phrase 99% confident mean?
c. What assumptions must you make about the sampling procedure so that this confidence interval will be valid? What does this mean to the chemist who is performing the analysis?
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Probability and Random Processes With Applications to Signal Processing and Communications
Authors: Scott Miller, Donald Childers
2nd edition
123869811, 978-0121726515, 121726517, 978-0130200716, 978-0123869814
