How many Kleenex should the Kimberly Clark Corporation package of tissues contain? Researchers determined that 60 tissues is the average number of tissues used during a cold. Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: mean of X= 52, s = 22. Suppose the test statistic does fall in the rejection region at a = 0.05. Which of the following decision is correct?
A.
At a = 0.05, we do not reject H 0 .
B.
At a = 0.05, we reject H 0 .
C.
At a = 0.05, we accept H 0 .
D.
At a = 0.10, we do not reject H 0 .