Suppose that we have a white urn containing five white balls and one red ball and we have a red urn containing one white ball and
four red balls. an experiment consists of selecting at random a ball from the white urn and then (without replacing the first ball) selecting at random a ball from the urn having the color of the first ball. find the probability that the second ball is red. what is the probability that the second ball is red is?

0.36

Step-by-step explanation:

here there are two situation

1. from white urn the first ball chosen is white

P(probability of first ball white)= 4/5

now P( second ball red) = 1/5

total probability of second ball being red = (4/5)*(1/4)= 4/20

2. from the white urn first ball chosen is red

P(first ball red )= 1/5

now, P(second ball red from red urn)= 4/5

total probability of second ball being red = (1/5*4/5)= 4/25

now considering both the situation the total probability that the second ball is red

= 4/20 + 4/25 = 9/25= 0.36

points are handed out whenever you post answers.

brainliest answers are handed out by the person asking the question, so whether your answer is picked depends entirely on whether the asker bothers to pick

if you're asking about your rank, it depends on having a certain number of points and a certain number of brainliest answers. for example, at the time of this writing, i have 44338 points out of 15000 needed for the next (nearly triple the requirement! ) but i only have 24 out of 50 required brainliest answers. this number decays, meaning after a certain amount of time (i think about a month), the total number of brainliest answers you've earned doesn't count toward this total. (i've been stuck at the same rank for a long

the lesson to learn here is that you shouldn't worry about points or rank. chances are, no matter how good an answer you may provide, your efforts will go mostly unnoticed unless you focus on the newest/most active questions that get posted.