Use the confidence level and sample data to find a confidence interval for estimating the population mean. round your answer to the same number of decimal places as the sample mean.
of the packages received by a parcel service, 37 packages were randomly selected. the sample has a mean weight of 17.0 pounds and a standard deviation of 3.3 lb. what is the 95% confidence interval for the true mean weight, μ, of all packages received by the parcel service?
a)15.7 lb< μ< 18.3 lb
b)15.9 lb< μ< 18.1 lb
c)15.6 lb< μ< 18.4 lb
d)16.1 lb< μ< 17.9 lb