The article Abyssal Peridotites > 3,800 Ma from Southern West Greenland: Field Relationships, Petrography, Geochronology, Whole-Rock and

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The article €œAbyssal Peridotites > 3,800 Ma from Southern West Greenland: Field Relationships, Petrography, Geochronology, Whole-Rock and Mineral Chemistry of Dunite and Harzburgite Inclusions in the Itsaq Gneiss Complex€ (C. Friend, V. Bennett, and A. Nutman, Contributions to Mineral Petrology, 2002:71€“92) presents silicon dioxide (SiO2) concentrations (in weight percent) for 10 dunites. The results are40.57 41.48 40.76 39.68 43.68 43.53 43.76 44.86 43.06 46.14


a. Can you conclude that the mean concentration is greater than 41? Compute the appropriate test statistic and find the P-value.

b. Can you conclude that the mean concentration is less than 43? Compute the appropriate test statistic and find the P-value.

c. Can you conclude that the mean concentration differs from 44? Compute the appropriate test statistic and find the P-value.

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