Question: A sample of 30 border collie dogs yields an average height of 21 inches and a standard deviation of 2.5 inches. What critical value t*

A sample of 30 border collie dogs yields an average height of 21 inches and a standard deviation of 2.5 inches.

What critical value t* should we use for a 95% confidence interval? Round to three decimal places.

The 95% confidence interval obtained from this sample is to . Round to one decimal place and omit the unit.

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