[Step-by-Step] Consumer Reports wants to determine if the average lifetimes of ballpoint pins of three different types are the same. The magazine takes a
Question: Consumer Reports wants to determine if the average lifetimes of ballpoint pins of three different types are the same. The magazine takes a random sample of pens of each type. Results are shown in the following table.
At the 0.05 level of significance is Consumer Reports correct?
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