In one large city, 37% of all voters are Democrats. If two voters are randomly selected for a survey, find the probability that at most one voter selected is a Democrat.

Question

Use the appropriate multiplication rule to find the indicated probability.

In one large city, 37% of all voters are Democrats. If two voters are randomly selected for a survey, find the probability that at most one voter selected is a Democrat.

  a. 0.466

 

  b. 0.863

 

  c. 0.137

 

 d.  0.740

 

Answer 1

probability that at most 1 democrat is selected = 1 - probability that two democrats are selected =

1 - 0.37 * 0.37 = 0.8631