For a recent year, the mean fare to fly from Charlotte, North Carolina, to Chicago, Illinois, on a discount ticket was $267. A random sample of 13 round-trip discount fares on this route last month shows:

$321 $286 $290 $330 $310 $250 $270 $280 $299 $265 $291 $275 $281

At the 0.01 significance level, can we conclude that the mean fare has increased? What is thep-value?

a.What is the decision rule?(Round your answer to 3 decimal places.)

b.Compute the value of the test statistic.(Round your answer to 3 decimal places.)

c.What is your decision regardingH₀?

d.Estimate thep-value?