Question
Assume researchers are trying to find out the mean concentration levels of a specific drug in a population of individuals' blood during a clinical trail.
Assume researchers are trying to find out the mean concentration levels of a specific drug in a population of individuals' blood during a clinical trail. The researchers find that the sample population has a mean concentration of 225 ng/mL with a standard deviation of 47 ng/mL. Calculate a 95% confidence interval for the mean concentration level of the medication for the population's blood and interpret it.
[1] The researchers are 95.0% confident the true mean concentration of medication in the population's blood is between 147.92 ng/mL and 302.08 ng/mL.
[2] The researchers are 95.0% confident the true mean concentration of medication in the population's blood is between 147.45 ng/mL and 302.55 ng/mL.
[3] The researchers are 95.0% confident the true mean concentration of medication in the population's blood is between 132.88 ng/mL and 317.12 ng/mL.
[4] The researchers are 95.0% confident the true mean concentration of medication in the population's blood is between 147.69 ng/mL and 302.32 ng/mL.
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