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A random sample of state gasoline taxes (in cents)... NEED HELP! MATH
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 |
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