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Dr Molefe Surveys 50 University Students to Discover the Relationship

Question 206

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Dr Molefe surveys 50 university students to discover the relationship between textbook price and ratings of readability. Dr Molefe finds that for these two variables the correlation coefficient is -0.70. This indicates that


A) more expensive books tend to receive higher readability ratings than less expensive books.
B) there is no relationship between textbook price and ratings of readability.
C) increasing a textbooks price will cause a decrease in its readability rating.
D) more expensive books tend to receive lower readability ratings than less expensive books.

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