Question

Data was gathered on 29 people to investigate the relationship between age (x) and Systolic Blood Pressure (y). The scatter plot and Summary Statistics are shown below. a) Use the scatterplot and Summary Statistics to describe the direction and strength of the relationship between Age and Systolic Blood Pressure, referencing the appropriate statistic. b) What is the regression equation for predicting Systolic Blood Pressure from Age? c) What are the Null and Alternate hypotheses for testing whether there is a significant relationship between Age and Systolic Blood Pressure? d) i) How much of the variation in Systolic Blood Pressure is explained by this regression model? ii)) Is it reasonable to use this regression equation to predict Systolic Blood Pressure from the Age?

Answer 1

in your questions thewwas no data or summary statistics so i have posted te general theory of linear regression..

for question c)

test H0:r=0 vs H1:r not equal to 0

100*r² % of total variation of sbp is explainedby the model..

last part can't be answered as the value of r is not known..

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