An automobile manufacturer measures the mean braking distance for each of 40 new automobiles both before and after they have been installed with a special brake pad. He would like to know if the special brake pad makes a difference in mean braking distance. What test would you choose to answer the question?

What will be an ideal response?


Correct Answer:
t-test for dependent means

Education

You might also like to view...

The reliability of a spelling test is .80 . If the test is doubled in length, the reliability of the test will be approximately

a. .80. b. .84. c. .89. d. .90. e. 1.60.

Education

Describe the concept of a community school. Discuss the roles of parents, teachers, and community members in such an endeavor. Give an example of an activity that might happen in a 21st Century Learning Center

What will be an ideal response?

Education

Which of the following are assertive communication strategies which can be used to develop self-advocacy and empowerment:

a. Be calm and direct in expressing feelings and desires b. Employ "I statements" c. Explain reactions to and feelings about others behavior d. All of the above

Education

Instruction in ______ focuses on helping students master the sounds in the language.

a. phonics b. fluency c. phonemic awareness d. vocabulary development

Education