a bag contains 4 white, 3 blues, and 5 reds marbles
1. find the probability of choosing a red marble, then white marbles if the marbles are being replaced.
1/12
5/36
5/6
5/12 ****
2.find the probability of choosing 3 blue marbles in a row if the marbles are being replaced
2/11****
1/220
1/27
1/64
3. find the probability of choosing a blue marble, then red marbles if the marbles are not being replaced
5/44
15/35
2/3****
1/15
4.find the probability of choosing 2 white marbles in a row if the marbles are not being replaced
1/11
1/9
2/3
1/16
alright took a chance and took the test got a 75 but here is all the right answer for connection students copyright from the testLesson 4: Compound Events CE 2015
27.0220002 Math 7 B Unit 3: Using Probability
1. b 5/36
2. d 1/64
3. a 5/44
4. a 1/1
1. B
2. D
3. A
4. A
I got a 4/4. Hope it helps.
4/4 is correct!!!
for number one it just says a white marble if they where all replaced
#1. P(red) is indeed 5/12
you don't say how many white marbles are to be drawn
#2. P(blue) = 3/12
P(blue,blue) = 3/12 * 3/12
P(blue,blue,blue) = (3/12)^3 = 1/64
#3. P(blue,red) = 3/12 * 5/11
#4. P(white,white) = 4/12 * 3/11