1. [SPSS] In a group of patients undergoing dialysis for chronic renal failure for a period of at least two years, it was determined which of the individuals had experienced at least one episode of peritonitis, an inflammation of the membrane lining the abdominal cavity, and which had not. The results are contained in the data setdialysis.sav. The variableperito is a dichotomous random variable taking the value 1 if an individual experienced an infection and 0 otherwise. Potential explanatory variables are age, sex, and racial background.The variableage is continuous;sex andrace are dichotomous and take the value 1 for female and non-white patients, respectively. Male and white individuals are represented by 0.
   1. Fit three separate logistic regression models investigating the effects of age, sex, and racial group on the probability that an individual experiences peritonitis. Interpret the estimated intercepts and coefficients of each explanatory variable.
   2. What is the predicted probability that a white patient undergoing dialysis for chronic renal failure will experience peritonitis?What is the probability for a non-white patient?
   3. What are the estimated odds of developing peritonitis for females versus males?
   4. At thea = 0.05 level of significance, which of the explanatory variables help to predict peritonitis in patients undergoing dialysis?