Use of the standard normal
A laboratory in New York is interested in finding the mean chloride level for a healthy resident in the state. A random sample of 60 healthy residents has a mean chloride level of 100 mEq/L. If it is known that the chloride levels in healthy individuals residing in New York have a standard deviation of 42 mEq/L, find a 95% confidence interval for the true mean chloride level of all healthy New York residents.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
I need to know what the upper and lower limit of the 95% confidence interval is. So there will be two answers. One upper, one lower thanks!!!
A laboratory in New York is interested in finding the mean chloride level for a healthy resident in the state. A random sample of 60 healthy residents has a mean chloride level of 100 mEq/L. If it is known that the chloride levels in healthy individuals residing in New York have a standard deviation of 42 mEq/L, find a 95% confidence interval for the true mean chloride level of all healthy New York residents.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
I need to know what the upper and lower limit of the 95% confidence interval is. So there will be two answers. One upper, one lower thanks!!!
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A 95% C.I. is given by 100 mEq/L +- 1.96*42/Sqrt(60) mEq/L = 100 +- 10.63 mEq/L