The Cougar Swim Club acquired some SpeedoFastskinbodysuits and decided to test them out. A number of the club's fastest swimmers performed a 50m freestyle swim in a regular spandex bodysuit and in a Speedo Fastskin suit. The table below summarizes their times in seconds (s).

Swimmer

spandex

SpeedoFastskin

1

31.1

29.1

2

28.9

30.4

3

31.4

25.3

4

34.9

31.7

5

27.7

28.2

6

33.3

28.6

7

30.8

26.2

Perform a t-test for dependent means to determine if there is a difference between the regular spandex suit and the Fastskin bodysuit in terms of performance.

t =

df =

Critical value of t =(use alpha = 0.05)

Would you reject the null hypothesis?