In 10 test runs, an experimental engine consumed a mean of 12.9 gallons of gasoline per minute with a standard deviation of 1.5 gallons. Assume that the population is normally distributed. Construct a...

In 10 test runs, an experimental engine consumed a mean of 12.9 gallons of gasoline per minute with a standard deviation of 1.5 gallons.  Assume that the population is normally distributed. Construct a 98% confidence interval for the true average gasoline consumption of the engine.  Round to 1 decimal place.

Interpret your confidence interval.  Try and sound like a statistician.

Show all work on your scratch paper.