Question:1)

How many Kleenex should the Kimberly Clark Corporation package of tissues contain? Researchers want to test whether the average number of tissues used during a cold is less than 60 tissues.Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: X-bar = 52,s= 22. Using the sample information provided, what is the value of the test statistic.

z = (52-60)/22

z = (52-22)/60

z = (52-60)/0.22

z = (52-60)/2.2

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Question 2

0.5pts

How many Kleenex should the Kimberly Clark Corporation package of tissues contain? Researchers want to test whether the average number of tissues used during a cold is less than 60 tissues.Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: X-bar = 52,s= 22.What is the rejection region?

z <= 52

z <= 60

z <= -1.96

Cannot be answered from the information given.