3. Data problem: In this problem, we will be looking at the relationship between heart disease and some of the categorical variables In the Heart data on IGDN. (a) Construct three contingency tables to display the relationships between sex, exercise induced angina. fasting blood sugar and the outcome of interest of heart disease. Hint: Recall that in all the contingency tables we have looked at. the outcome of interest was displayed in the columns and the grouping variable was displayed in the rows. (b) Use the contingency tables for sex, exercise induced angina, and fasting blood pressure to ll out the following table. n is the total sample size (both with and without heart disease] and \"p is the observed riskiprobability of heart disease. Note that you only need to provide one odds ratio for each yariable, and this odds ratio should be the odds for the category in the rst row compared to the odds for the category in the second row, i.e. for sex it should be Odds males