a random sample of state gasoline taxes in cents is shown here for 12 states,round sample statistics and find final answers to 2 decimal places
55.5 47.2 55.4 43.4 43.4 47.2
39.2 37.4. 32.1 45.5 43.6 62.8
use the data to estimate the three population mean with gasoline tax with 99% confidence.assume the variable is normally distributed
