statistic question

statistic question

Refer to the Minerals engineering study of the impact of calcium and gypsum on the floatation properties of silica in water, Exercise 2.48 (p.53). Fifty solutions of deionized water were prepared both with and without calcium/gypsum, and the level of flotation of silica in the solution was measured using a variable called zeta potential. The data are reproduced in the table. Can you conclude that the addiction of calcium/ gypsum to the solution affects silica flotation level?

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statistic question

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