7. (25.25) Resistance training is a popular form of conditioning aimed at enhanc

Question

7. (25.25) Resistance training is a popular form of conditioning aimed at enhancing sports performance and is widely used among high school, college, and professional athletes, although its use for younger athletes is controversial. A random sample of 4111 patients between the ages of 8 and 30 admitted to U.S. emergency rooms with the injury code "weightlifting was obtained These injuries were classified as "accidental" if caused by dropped weight or improper equipment use. The patients were also classified into the four age categories "8-13," "14-18, "19-22," and "23-30." Here is a two-way table of the results ACCIDENTAL NOT ACCIDENTAL 8-13 14-18 19-22 23-30 295 655 239 363 916 533 1008 The degrees of freedom for the chi-square test for this two-way table are eBook O 3 4

Explanation / Answer

We have 4 categories here

The degree of freedom will be 4-1 = 3

So, Correct Option is B

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