Question

Refer to the data in the table to the right, obtained from a random survey of 1,000 residents of a state. The participants were asked their political affiliations and their preferences in an upcoming election. (In the table, D = Democrat, R = Republican, and U = Unaffiliated.) If a state resident is selected at random, complete Candidate A parts (A) and (B) below. Candidate B No Preference Totals A B N D 201 245 53 499 R 103 225 22 350 U 81 60 10 151 Totals 385 530 85 1,000 (A) What is the (empirical) probability that the resident is not affiliated with a political party or has no preference? (Type an integer or a decimal.) What are the odds for this event? (Type an integer or a simplified fraction.) (B) What is the (empirical) probability that the resident is affiliated with a political party and prefers candidate A? (Type an integer or a decimal.)

Answer 1

sol (N) las no preferences f@ ($) (A) P(affiliated with political party or क so (MX+Plo Hang PCDD+ P(R) + PIN) - P (Daud Ron) P 499 53+22 85 350 - 그 + + 1000 1000 1000 1000 - 859 10 Od = 0.859 odds for this event = 0.859 : (1-0.859) 859 (14) (B) P(affidited with a political party political party and prefers Candidate A) 499+ 350 385 * 1000 1000 0.849 * 0.385 0.326865 odds against Ang (1-0.326865): 0.326865) 673135/326865 18 Scanned with CamScanner