A Researcher Compares Bone Density in Retired Professional Athletes Across

question 28

Multiple Choice

A researcher compares bone density in retired professional athletes across three different sports.He computes a series of three t tests to examine all between-group differences, running each test with a p level of 0.01.What is the probability of a Type I error when making these comparisons?

• A) 0.03 or a 3 percent chance
• B) 0.01 or a 1 percent chance
• C) 0.000001 chance, so small it is not cause for concern
• D) 0.9703 or a 97 percent chance

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