A car company advertises that thir Super Spiffy Sedan averages 29mpg (miles per gallon). You randomly...

A car company advertises that thir Super Spiffy Sedan averages 29mpg (miles per gallon). You randomly select a sample of Super Spiffies from local car dealerships and test their gas mileage under similar conditions.

You get the following MPG scores:

33 27 32 34 34 28 27 31

Note: SSx = 63.50

Using alpha =.01, conduct the 8 steps to hypothesis testing to determine whether the actual gas mileage for these cars differs significantly from 29mpg.

Solutions

Expert Solution

t test hypothesis for single mean.

orchestra answered 1 year ago

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