A doctor wants to study the factors that influence the systolic blood pressure.

From the literature, he finds that the systolic blood pressure can be explained by gestation period, weight (kg), and age (days) for infants.

a. Develop the research model and identify the independent, dependent, mediation, and moderation variables, if any.

b. Write the hypotheses.

c. Based on the following regression output,

(i) Are all basic assumptions of regression met? Explain.

(ii) Is the requirement of model fit fulfilled? Explain.

(iii) Interpret the output of hypothesis testing.

Variables Entered/Removed Model Variables Variables Entered Removed Method weight_kgm, Enter gestation, age_day a. All requested variables entered. b. Dependent Variable: systolic_bp Model summary Model Adjusted R Sid. Error of the R R Square Square Estimate 949 909 .902 2.38037 a. Predictors: (Constant), weight_kgm, gestation, age_day ANOVAL Model Sum of Squares dif Mean Square F Sig. 1 Regression 1346.370 3 448.790 79.205 .000% Residual 118.990 21 5.666 Total 1465.360 24 a. Predictors: (Constant), weight_kgm, gestation, age_day b. Dependent Variable: systolic_bpModel Unstandardized Standardized Coefficients Coefficients Sig Collinearity Statistics B Sid, Error Beta Tolerance VIF 1 (Constant) 63.938 6.435 9.936 1000 gestation -6.687 861 -.357 -2.379 .034 .754 1.326 age_day 5.575 623 826 8.944 .000 .453 2.205 weight_kgm 3.249 1.591 .199 2.043 054 408 2.453 Normal Q-Q Plot of systolic_bp Expected Normal Observed Value Debranded Normal Q-0 Plot of systolic_bp Onurged Value