19. use the confidence level and sample data to find a confidence interval for estimating the population . Round your answer to the same number of decimals places to sample the mean . 37 packages are randomly selected from packages recieved by a parcel service. The sample had a mean weight of 10.3 pounds and a standard diviation of 2.4 pounds. What is the 95% confidence interval for the true mean of , of all the packages recieved by the parcel service