27. Suppose that the standard deviation given represents the unbiased sample standard deviation corresponding

to the 36 bottles. If the level of significance is 0.05, the critical value associated with the t test (in absolute term )

is:

A Less than 1.63

B Between 1.63 and 1.66

C Between 1.66 and 1.69

D. More than 1.69

E. None of the above