A researcher is interested in whether students who attend private elementary schools do better or worse on a standard test of intelligence than the general population of elementary school children. A random sample of 75 students at a private elementary school is tested and has a mean intelligence test score of 103.5. The average for the general population of elementary school children is 100 ($\sigma$ = 15).
-Calculate the 95% confidence interval for the population mean based on the sample mean.

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The Answer of A researcher is interested in whether students who attend private elementary schools do better or worse on a standard test of intelligence than the general population of elementary school children. A random sample of 75 students at a private elementary school is tested and has a mean intelligence test score of 103.5. The average for the general population of elementary school children is 100 ($\sigma$ = 15).
-Calculate the 95% confidence interval for the population mean based on the sample mean.

A Researcher Is Interested in Whether Students Who Attend Private σ\sigmaσ

A Researcher Is Interested in Whether Students Who Attend Private $\sigma$