Question

# A random sample of six cars from a particular model year had the following fuel consumption...

A random sample of six cars from a particular model year had the following fuel consumption figures (in miles per gallon). Find the 80% confidence interval for the true mean fuel consumption for cars of this model year.   Left endpoint=? Right endpoint=?

Sample data:

19

20.9

19.8

18.9

18.9

18.1

Hence 80% confidence interval is  ( 18.6854 , 19.8480 )

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