4.4 4) The quality control officer at Spaz Cola uses a systematic random sampling method to select cans of Spaz Cola to determine whether the machines are maintaining the correct recipe. Among the 480 cans analyzed today, 43 cans contained less sugar than the Spaz recipe requires! Identify each of the following as specifically as possible: a) Population (of interest) b) Parameter (of interest) c) Sample d) Statistic

b с d a

Assuming a population of interest is approximately normally distributed, construct a 95% confidence interval estimate for the population mean given the following values: Sample mean = 30; %3| Sample standard deviation =3.5; Sample size =15