The length of the menstrual cycle from a random sample of twelve women (n = 12) was measured to test the null hypothesis that the mean length of menstrual cycle is equal to a lunar month (i.e., 29.5 days). The data are presented below:

30

28

27

25

29

31

33

30

29

31

28

30

Assuming that the data are normally distributed, run a one-sample t-test and select the best answer from the followings:

Select one:

a.|t| = 0.414 < critical t = 2.201, accept the null hypothesis

b.|t|= 0.414 < critical t = 2.179, accept the null hypothesis

c.|t|= 0.414 < critical t = 1.782, accept the null hypothesis

d.|t|= 0.414 < critical t = 1.796, accept the null hypothesis

e.None of the above