Question
I need help with the following question? Researchers determined that the number of Kleenex tissues used during a cold is normally distributed with an mean
I need help with the following question?
Researchers determined that the number of Kleenex tissues used during a cold is normally distributed with an mean of 60 and a standard deviation of 25. Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: sample mean ( /x ) = 52. But, suppose the test statistic does not fall in the rejection region at a = 0.05. Which of the following conclusions is correct?
a) At a = 0.05, we do not reject H0.
b) At a = 0.05, we reject H0.
c) At a = 0.05, we reject Ha.
d) both a and c
Please show work of answer.
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