1.Two boats, the Prada (Italy) and Oracle (USA), are competing in the race. They race over a part of the course several times. Table 2 and 3 below present the data analysis regarding the performance of the two boats.

Table 2: The descriptive statistics of the two boats

Group Statistics

Boat

N

Mean

Std. Deviation

Std. Error Mean

Time

Prada

10

12.1700

1.05625

0.33402

Oracle

12

14.8750

2.20789

0.63736

Table 3: The two-sample t-test for the boat performance

t

df

Sig. (2-tailed)

Std. Error Difference

90% Confidence Interval of the Difference

Lower

Upper

-3.541

20

0.002

0.76393

-4.02256

-1.38744

a.Test the hypothesis that the performance of the two boats differs significantly. Use type 1 error at 5%.

b.What can you conclude when you get a negative t-value and a negative confidence interval for lower and upper interval?

c.Which boat is faster between the two?