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. RejectH₀ift_calc> 1.688b.

b.H₀:_toy-_hon 0 vs.H₁:_toy-_hon> 0. RejectH₀ift_calc< 1.688c.

c.H₀:_toy-_hon 0 vs.H₁:_toy-_hon< 0. RejectH₀ift_calc< - 1.688d.

d.H₀:_toy-_hon 0 vs.H₁:_toy-_hon< 0. RejectH₀ift_calc> - 1.688

(a-2)Calculate thet_calc.(Round your answer to 4 decimal places.)

(b)Calculate thep-value using Excel.(Round your answer to 4 decimal places.)