Questions 21 to 25:A statistics class made two different designs of airplanes in class and then went outside to see how far each type of plane would fly.The distances flown for the two types of planes is shown below.Assume that the distributions of distances flown are not "ugly nonnormal".

Arrowhead

8, 7, 6, 7.5, 4, 14, 8, 10, 11, 5, 4, 10.5, 7, 4

EZ Air

1, 2, 5, 3, 5, 7, 2, 2, 7, 4, 1, 1, 5, 7

1.State the null and alternative hypotheses in order to determine if there is a statistical difference in the distance flown by the two planes.

Ho:______________Ha:_____________

2.Using Stats.blue, calculate the t-statistic and p-value for the difference in distances flown.

p = _____________t = ____________

3.Use the p-value to justify whether there is a difference in distance.

4.What was the mean distance flown for each plane?

Arrowhead = ________EZ Air = _________

5.Calculate a 95% confidence interval for the mean flight difference between the two planes.