1Question 1

Based on the air fare data, is it significantly more costly to fly out of Dayton than it is to fly out of Louisville? Assume there is unequal variance in the two samples.Use a 90% confidence level, or alpha = .1.

Select one:

a. Yes, it is almost 25% more expensive to fly out of Dayton.

b. Yes, the t critical is bigger than the t statistic.

c. No, we can conclude the one tail test has a p value of greater than .1, which does not allow us to reject the claim of equal means at the 10% level of significance.

d. Yes, we can conclude the two tail test has a p value of .1, which not allows us to reject the claim of equal means at the 20% level of significance for a two-tail test allows us to reject the null.

Dayton

319

192

503

256

339

379

268

288

Lousiville

142

213

317

387

317

167

273

274