Estimate the true average percent of shrinkage

Reference no: EM131812442

Question: An important property of plastic clays is the percent of shrinkage on drying. For a certain type of plastic clay, 45 test specimens showed an average shrinkage percentage of 18.4 and a standard deviation of 1.2. Estimate the true average percent of shrinkage for specimens of this type in a 98% confidence interval.

Reference no: EM131812442

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