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How Is the Number of Pages in a Textbook Related

Question 70

Multiple Choice

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 ($) and number of pages for each book. Here's output from analyzing the data collected in the Corr/Regression applet. Assume, for now, that the normal approximation-based method is valid, and thus, the p-value from the Regression Table below is valid. How is the number of pages in a textbook related to the price of the textbook? To find out, two Cal Poly freshmen (2006)  randomly selected 30 textbooks at the campus bookstore and recorded the price ($)  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.   -A 95% confidence interval for the population slope is (0.108, 0.187) . Which of the following statements are valid based on this interval? A)  If we repeated this study many times, 95% of the regression slopes would fall between 0.108 and 0.187. B)  There is a 95% probability that the population slope is between 0.108 and 0.187. C)  We are 95% confident that the population slope is between 0.108 and 0.187. D)  We have significant evidence that the population slope is greater than zero. E)  Both A and B F)  Both B and C G)  Both C and D
-A 95% confidence interval for the population slope is (0.108, 0.187) . Which of the following statements are valid based on this interval?


A) If we repeated this study many times, 95% of the regression slopes would fall between 0.108 and 0.187.
B) There is a 95% probability that the population slope is between 0.108 and 0.187.
C) We are 95% confident that the population slope is between 0.108 and 0.187.
D) We have significant evidence that the population slope is greater than zero.
E) Both A and B
F) Both B and C
G) Both C and D

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