The following is a sample of overall miles per gallon (MPG) of family sedans:

38 24 26 21 25 22 24 34 23 20 37 22 20 33 22 21

a. Construct a 95% confidence interval estimate for the population mean MPG of 2012 family sedans, assuming a normal distribution.

b. Interpret the interval constructed in (a).

*use of PHstat preferred (but not required) for this assignment*

**For a, must include: Mean, Standard Deviation, Standard Error of the Mean, Z value, Interval Width, Interval Lower Limit, and Interval Upper Limit**

Subject | Mathematics |

Due By (Pacific Time) | 07/30/2013 12:00 am |

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