A random sample of state gasoline taxes (in cents) is shown here for 12 states. Use the data to estimate the true population mean gasoline tax with 90% confidence. Does your interval contain the national average of 44.7 cents?
38.4 40.9 67 32.5 51.5 43.4 38 43.4 50.7 35.4 39.3 41.4
1 answer
I posted it once. But thanks.
4 answers