Calcium The calcium (Ca) content ofa powdered mineral substance was analyzed10 times
Chapter 10, Problem 87(choose chapter or problem)
Calcium The calcium (Ca) content ofa powdered mineral substance was analyzed10 times with the following percent compositionsrecorded:.0271 .0282 .0279 .0281 .0268.0271 .0281 .0269 .0275 .0276a. Find a 99% confidence interval for the true calciumcontent of this substance.b. What does the phrase 99% confident mean?c. What assumptions must you make about the samplingprocedure so that this confidence interval willbe valid? What does this mean to the chemist whois performing the analysis?
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