The data at left come from a sample of the overall miles per gallon (MPG) of 2008 sedans priced unde

/in /by

The data at left come from a sample of the overall miles per gallon (MPG) of 2008 sedans priced under $20,000.

Q-4a: Construct a 95% confidence interval estimate for the population mean MPG of 2008 sedans under $20,000. (Round to one decimal place.)

31

27

27

28

28

28

25

25

26

25

33

23

24

 
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