15

15 Graphical Models w_good w_bad h_true h_false 0.4 0.3 Weather Holiday Ice Cream Sales #Tweets s_high s_low #low #high 0.8 h_true h_false 0.9 w_bad, h_true w_bad, h_false w_good, h_true w_good, h_false 0.2 0.4 A Bayesian Network Please fill in the following blanks. 4.Op a To explicitly define a joint distribution over four random variables: Weather (w_good or w_bad), Holiday (h_true or h_false), Ice Cream Sales (s_high or s_low), and #Tweets (#high or #low), the number of probabilities to specify is at least given no independence assumptions. 3.0p b Given the above Bayesian network, we only need to specify conditional probabilities. 5.Op The probability of (good weather holiday high ice cream sales a high number of tweets) is Please decide whether the following statements are True or False