(Step-by-Step) Ten randomly selected automobiles were stopped, and the tread depth of the right front tire was measured. The mean was 0.32 inch and the standard
Question: Ten randomly selected automobiles were stopped, and the tread depth of the right front tire was measured. The mean was 0.32 inch and the standard deviation was 0.08 inch. Find the 95% confidence interval of the mean depth. Assume that the variable is approximately distributed.
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