Question
The average mpg usage for a 2009 Toyota Prius for a sample of 19 tanks of gas was 45.0 with a standard deviation of 1.7.
The average mpg usage for a 2009 Toyota Prius for a sample of 19 tanks of gas was 45.0 with a standard deviation of 1.7. For a 2009 Honda Insight, the average mpg usage for a sample of 19 tanks of gas was 42.4 with a standard deviation of 2.1.
Assuming equal variances, at = 0.05, is the true mean mpg lower for the Honda Insight?
(a-1)Choose the appropriate hypotheses.
a.H0:toy-hon 0 vs.H1:toy-hon> 0. RejectH0iftcalc> 1.688b.
b.H0:toy-hon 0 vs.H1:toy-hon> 0. RejectH0iftcalc< 1.688c.
c.H0:toy-hon 0 vs.H1:toy-hon< 0. RejectH0iftcalc< - 1.688d.
d.H0:toy-hon 0 vs.H1:toy-hon< 0. RejectH0iftcalc> - 1.688
(a-2)Calculate thetcalc.(Round your answer to 4 decimal places.)
(b)Calculate thep-value using Excel.(Round your answer to 4 decimal places.)
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