calculate the 95% confidence interval for the mean lead concentration for all the children in the school

#1
Please answer the following problem and provide a step by step explanation please

The concentration of lead in the bloodstream was measured for a sample of 50 children from a large school near a busy main road. the sample mean was 10.12 ng ml and the standard deviation was 0.64 ng ml¯, calculate the 95% confidence interval for the mean lead concentration for all the children in the school.
 

spunky

Can't make spagetti
#3
Please answer the following problem and provide a step by step explanation please

The concentration of lead in the bloodstream was measured for a sample of 50 children from a large school near a busy main road. the sample mean was 10.12 ng ml and the standard deviation was 0.64 ng ml¯, calculate the 95% confidence interval for the mean lead concentration for all the children in the school.
Interesting. This is an exercise problem both in Statistics for Environmental Engineers AND in Statistics and Chemometrics for Analytical Chemistry .

I had never seen the same exercise in two different books with different authors.
 

Miner

TS Contributor
#4
Please answer the following problem and provide a step by step explanation please

The concentration of lead in the bloodstream was measured for a sample of 50 children from a large school near a busy main road. the sample mean was 10.12 ng ml and the standard deviation was 0.64 ng ml¯, calculate the 95% confidence interval for the mean lead concentration for all the children in the school.
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