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posted by Anonymous .
A random sample of midsized cars tested for fuel consumption gave a mean of miles per gallon with a standard deviation of miles per gallon.
Assuming that the miles per gallon given by all midsized cars have a normal distribution, find a confidence interval for the population mean, .
Round your answers to two decimal places.

Use a confidence interval formula for the data.
Here is an example of one for a 95% confidence interval:
CI95 = mean ± 1.96 (sd/√n)
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