How is the number of pages in a textbook related to the price of the textbook? To find out, two Cal Poly freshmen (2006) randomly selected 30 textbooks at the campus bookstore and recorded the price ($) and number of pages for each book. Here's output from analyzing the data collected in the Corr/Regression applet. Assume, for now, that the normal approximation-based method is valid, and thus, the p-value from the Regression Table below is valid.
-What is the most appropriate null hypothesis for testing the regression slope using theory-based methods?
A) There is no association between number of pages in a textbook and price of the textbook.
B) There is an association between number of pages in a textbook and price of the textbook.
C) There is no linear association between number of pages in a textbook and price of the textbook.
D) There is a linear association between number of pages in a textbook and price of the textbook.

Question

How is the number of pages in a textbook related to the price of the textbook? To find out, two Cal Poly freshmen (2006) randomly selected 30 textbooks at the campus bookstore and recorded the price ($) and number of pages for each book. Here's output from analyzing the data collected in the Corr/Regression applet. Assume, for now, that the normal approximation-based method is valid, and thus, the p-value from the Regression Table below is valid. 
-What is the most appropriate null hypothesis for testing the regression slope using theory-based methods?
A) There is no association between number of pages in a textbook and price of the textbook. 
B) There is an association between number of pages in a textbook and price of the textbook. 
C) There is no linear association between number of pages in a textbook and price of the textbook. 
D) There is a linear association between number of pages in a textbook and price of the textbook.

Quizplus · Accepted Answer

The null hypothesis for testing the regression slope is that there is no linear association between the independent and dependent variables, which is option C.

How Is the Number of Pages in a Textbook Related