Artificial Hip Joints Consist of a Ball and Socket $\alpha = 0.05$

question 31

True/False

Artificial hip joints consist of a ball and socket. As the joint wears, the ball (head) becomes rough. Investigators performed wear tests on metal artificial; hip joints. Joints with several different Diameters were tested. The following table presents measurements of head roughness (in Nanometers). Can you conclude that the mean roughness varies with diameter? Use the $\alpha = 0.05$ level of significance.

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