Researchers determined that 60 Puffs tissues is the average number of tissues used during a cold. Suppose a random sample of 100 Puffs users yielded the following data on the number of tissues used during a cold: = 52 and s = 22. Suppose the alternative we wanted to test was H1: < 60. The correct rejection region for = 0.05 is:
A) reject H0 if t > 1.6604.
B) reject H0 if t < -1.6604.
C) reject H0 if t > 1.9842 or Z < -1.9842.
D) reject H0 if t < -1.9842.
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