b What is the slope of this line What does this value mean in terms of the

B what is the slope of this line what does this value

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b)What is the slope of this line? What does this value mean in terms of the story? (2 points) c)How much of the variation in the STAT 225 exam score is explained by the linear relationship with the number of hours spent playing WOW per week? (2 points) d)What is the value of the correlation between exam score and the number of hours per week spent playing the game? Show all work. (2 points) e)Suppose a student played WOW for 23 hours per week. What is his/her predicted STAT 225 Exam Score? Is this predicted value valid? Why or why not? (3 points) ? f)If the number of hours playing WOW were to decrease by 2.5 hours per week, by how much would you expect the STAT 225 Exam Score to change? (2 points)
14.Smithy University released the following admissions data for a recent year for three different departments. Use the tables below to answer the questions.Department Admitted Rejected TOTAL A 501 332 B 370 215 C 46 53 TOTAL 917 600 1517 a)What is the probability that a rejected student had applied to Department B? Is this a marginal, conditional or joint probability? (3 pts) 833 585 99 b)Rank the departments’ admission rates from highest to lowest. Show how you determined this.(4 points) c)If the Admissions Office at Smithy University wanted to determine whether the acceptance status was related to the Department, state the appropriate Null and Alternate Hypotheses. (2 points) d)Calculate the expected count for Rejected students in Department C. (2 points) e)Calculate the partial χ2value for Rejected Students in Department C (2 points) (14. continued on next page)

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