(Solved) 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 with
Question: 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 with 90% confidence does your interval contain the national average of 21 cents?
21.5 23 16 20.7 25.9
20 25.3 17 28 30
20 31
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