The random sample data analysis showed that the mean salary of 40 elementary school teachers in study showed $28,500. Is the sample data within or out of the 95% CI the reference information (a mean of $27,000 and a standard deviation of $2,000)? Show me the process how to prove true or false on this statement (use 95% CI).
Answer:-

This is the overall process to prove that the sample data is out of 95 % confidence interval .
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