SOLUTION: The table shows the political affiliation for a random sample of American voters and their positions on the death penalty. Favor Oppose Democrat 270 130 Republican 115

Algebra ->  Probability-and-statistics -> SOLUTION: The table shows the political affiliation for a random sample of American voters and their positions on the death penalty. Favor Oppose Democrat 270 130 Republican 115      Log On


   

Question 420941: The table shows the political affiliation for a random sample of American voters and their positions on the death penalty.
Favor Oppose
Democrat 270 130
Republican 115 220
Other 40 85
ok so i figure i add them all favor 425 & oppose 435

a. Determine the probability that a randomly selected person favors the death penalty.
is this correct thinking 435/425 ?????

b. Determine the probability that a randomly selected person is a democrat given that they favor the death penalty.
is this correct thinking 270/425 ???????
c. Determine the probability that a randomly selected person favors the death penalty given that they are a republican.
is this correct thinking 115/425 ?????
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi, nice preentation

Do like completing the table with Totals for more clarity:

	       Favor  Oppose  Total

Democrat	     270	130	400

Republican	     115	220	335

Other	          40	85	125

total  	    425	435	860

a. P(a randomly selected person favors the death penalty) = 425/860

b. P(a randomly selected person is a democrat given that they favor the death penalty) 270/425 

c.P(probability that a randomly selected person favors the death penalty given that they are a republican) 115/335