Try out our new practice tests completely free!
Solved

# Artificial Hip Joints Consist of a Ball and Socket $\begin{array}{ccccc}\hline \text { Diameter } &{\text { Head Roughness }} \\\hline 16 & 19.8 & 25.9 & 17.5 & 23.2 \\24 & 31.9 & 33.0 & 27.7 & \\30 & 26.6 & 28.8 & 21.2 & \\\hline\end{array}$

Question 60
Multiple Choice
Question 60
Multiple Choice

## 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).$\begin{array}{ccccc}\hline \text { Diameter } &{\text { Head Roughness }} \\\hline 16 & 19.8 & 25.9 & 17.5 & 23.2 \\24 & 31.9 & 33.0 & 27.7 & \\30 & 26.6 & 28.8 & 21.2 & \\\hline\end{array}$Perform the Tukey-Kramer test to determine which pairs of means, if any, differ. Use the $\alpha = 0.05$ level of significance.

A) $\mu _ { 16 } \neq \mu _ { 24 }$
B) $\mu _ { 16 } \neq \mu _ { 24 } , \mu _ { 16 } \neq \mu _ { 30 }$
C) $\mu _ { 16 } \neq \mu _ { 24 } , \mu _ { 24 } \neq \mu _ { 30 }$
D) There is not enough evidence to conclude that any of the means differ.

Choose question tag

10+ million students use Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions in 300k quizzes.

### Statistics

Explore our library and get Introductory Statistics Homework Help with various study sets and a huge amount of quizzes and questions

Get Free Access Now!
Textbook Solutions

Find all the solutions to your textbooks, reveal answers you would’t find elsewhere

Search By Image

Scan any paper and upload it to find exam solutions and many more

Flashcards

Studying is made a lot easier and more fun with our online flashcards