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 test statistic does not fall in the rejection region at ? = 0.05 . Which of the following conclusions is correct?
a. At ? = 0.05, we do not reject H0 . c. At ? = 0.05, we accept H0.
b. At ? = 0.05, we reject H0 . d. Both a and c.
A
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