Both surface soil and subsoil specimens were taken from, Ask an Expert

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Both surface soil and subsoil specimens were taken from eight randomly selected agricultural locations in a particular county. The soil specimens were analyzed to determine both surface pH and subsoil pH, with the results shown in the accompanying table.

2259_agricultural locations in a particular.png

a. Compute a 90% confidence interval for the mean difference between surface and subsoil pH for agricultural land in this county.

b. What assumptions are necessary for the interval in Part (a) to be valid?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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