## Question

###### Cradei6) A vehicle owner interested in her vehicle's fuel economy calculated the gas mileage in miles per gallon (mpg) each Commnunication time she filled her tank; for several years_ strong Here are the mpg X2 values for & random sample of 20 of these records. Suppose that the standard deviation is known to be o = 3.5 mpg: Gas Mileage in _mpg 41.5 50.7 36.6 37.3 34.2 45.0 48.0 43.2 47.7 42.2 43.2 44.6 48.4 46.4 46.8 39.2 37.3 43.5 44.3 43.3 Find the 95% confidence interval for 14L, th

Cradei 6) A vehicle owner interested in her vehicle's fuel economy calculated the gas mileage in miles per gallon (mpg) each Commnunication time she filled her tank; for several years_ strong Here are the mpg X2 values for & random sample of 20 of these records. Suppose that the standard deviation is known to be o = 3.5 mpg: Gas Mileage in _mpg 41.5 50.7 36.6 37.3 34.2 45.0 48.0 43.2 47.7 42.2 43.2 44.6 48.4 46.4 46.8 39.2 37.3 43.5 44.3 43.3 Find the 95% confidence interval for 14L, the mean gas mileage for this vehicle.

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