30FRAAUTITA BELSWEDEU"DEN"CHE25GBRFINHUN"PRT ESPGRC, LUXNORJAPPOL"CZENLDSVNAUSUSA"NZLCANISLŠVK IRLISRCHLEST10KORМЕX5102030405060Total tax revenue (% of GDP)Line of best fit: Y = -1.52 + 0.61 XR? = 0.61Figure 7 Social expenditure in relation to total tax revenue for selected OECD countriesBased on OECD (2007)The graph in Figure 7 plots a variable Y against a variable X for 33 OECD countries using 2007 data.Variable Y is an indicator of the level of government social expenditure (as a proportion of GDP). VariableX is the level of government tax revenue (also as a percentage of GDP). Figure 7 also shows theregression equation for the line of best fit and the value of R2 which measures the strength ofassociation between X and Y. This question has two parts; please answer both part (i) and part (ii).i) Examine Figure 7 and select the statements which are correct. (Choose one or more answers)It is impossible to identify any linear relationship between the two variables from the graph.The graph reveals a positive linear association between the two variables.The graph suggests that an increase in social expenditure requires an increase in tax revenue.The graph does not suggest that an increase in tax revenue leads to lower social expenditure.ii) Using the regression equation, calculate the percentage point change in social expenditure (Change invariable Y) associated with a decrease in tax revenue (change in variable X) of 10 percentage points.(Note that, in this case, you should not express the percentage changes as decimals; use theunadjusted percentage figures.) Give your answer to two decimal places.% of GDPSocial expenditure (% of GDP)

From the given information, The line of best fit is, Y=-1.52+0.61X, R^2=0.61 Here, X represents the…

Answered: The graph in Figure 7 plots a variable…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter7: Analytic Trigonometry

Section7.6: The Inverse Trigonometric Functions

Problem 93E

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