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46 The following data on calcium content of wheat are consistent with summary quantities that appeared in the article F Mineral Contents of Cereal Grains

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The following data on calcium content of wheat are consistent with summary quantities that appeared in the article F "Mineral Contents of Cereal Grains as Affected by Storage and Insect Infestation" (Journal of Stored Products Research [1992]). Three different storage times were considered. Is there sufficient evidence to conclude that the mean calcium content is not the same for the four different storage times? Test the appropriate hypotheses at the 0.01 level. Storage Time Observations 1 month in 2 months 3 months 59 59 Write the result Reject the null hypothesis. There is sufficient evidence to prove at least one mean is different. Reject the null hypothesis. There is sufficient evidence to prove storage time and observations are not independent. Fail to reject the null hypothesis. There is sufficient evidence to prove at least one mean is different. O Fail to reject the null hypothesis. There is insufficient evidence to prove at least one mean is different

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