Confidence interval estimate for average number of years

Reference no: EM13137012

A lawyer researched the average number of years served by 45 different justices on the Supreme Court. The average number of years served was 13.8 years with a standard deviation of 7.3 years. What is the 95% confidence interval estimate for the average number of years served by all Supreme Court justices?

Reference no: EM13137012

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