WorksheetsSimple Probability Independent
Total questions: 23
Worksheet time: 3hrs 58mins
Name
Class
Date
1.
Bag A contains 9 red marbles and 3 green marbles. Bag B contains 9 black marbles and 6 orange marbles. Find the probability of selecting one green marble from bag A and one black marble from bag B.
a)
3/20
b)
1/4
c)
3/31
d)
2/27
2.
A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement. P(orange,green)
a)
1/15
b)
2/15
c)
3/31
d)
1/5
3.
A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)
a)
2/9
b)
1/3
c)
1/2
d)
1/4
4.
A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced. P(purple then black)
a)
1/18
b)
2/5
c)
3/7
d)
4/9
5.
A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced.
P(black then white)
P(black then white)
a)
2/45
b)
3/7
c)
1/18
d)
2/19
6.
A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced
P(2 whites)
P(2 whites)
a)
2/15
b)
3/17
c)
4/19
d)
5/19
7.
A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced.
P(white, then purple, then black)
P(white, then purple, then black)
a)
1/36
b)
2/39
c)
5/41
d)
6/43
8.
There are six nickels and seven dimes in your pocket. You randomly pick a coin out of your pocket and then return it to your pocket. Then you randomly pick another coin. Find the probability that both times the coin is a nickel.
a)
6/13
b)
2/7
c)
5/16
d)
3/19
9.
There are 15 boys in a class with 14 girls. Find the probability of selecting a girl then a boy
a)
15/58
b)
18/33
c)
2/29
d)
1/29
10.
There are 40 ants total in a mans collection. He has 22 fire ants, 13 sugar ants and 5 carpenter ants. Find the probability of selecting a carpenter ant, and then a fire ant.
a)
11/156
b)
30/121
c)
18/51
d)
9/137
11.
Find the probability of selecting a black checker from a bag of 6 black and 4 red checkers, replacing it and selecting another black.
a)
9/25
b)
1/4
c)
2/23
d)
3/41
12.
Find the probability of rolling a six on a 6 sided cube and then rolling an odd number
a)
1/12
b)
3/4
c)
1/8
d)
2/9
13.
Sam has 13 computers, 6 are working and 7 are not. What is the probability of getting a working computer the first time you pick one, and then one that does not work.
a)
7/26
b)
6/13
c)
4/19
d)
2/21
14.
What is the probability of spinning a shade of blue?
a)
1/5
b)
2/5
c)
3/5
d)
4/6
15.
The following M & M colors are in the bowl:
4 yellow, 6 orange, 3 green, 5 blue, 2 brown
What is the probability of selecting a brown candy?
4 yellow, 6 orange, 3 green, 5 blue, 2 brown
What is the probability of selecting a brown candy?
a)
2/18
b)
1/9
c)
2/20
d)
1/10
16.
What is the probability of spinning an even number?
a)
16 2/3%
b)
33 1/3%
c)
50%
d)
75%
17.
A spinner has 4 equal sectors colored yellow, blue, green and red. Chances of landing on blue after spinning the spinner and then landing on red.
a)
Dependent Event
b)
Independent Event
18.
What is the probability of choosing a vowel from the alphabet?
a)
21/26
b)
5/26
c)
1/21
d)
7/21
19.
What is the probability of spinning green or blue?
a)
0
b)
5/12
c)
1/2
d)
3/4
20.
The chart below represents the number of marbles in a jar.
P(red or brown) =
P(red or brown) =
a)
5/19
b)
10/28
c)
5/14
21.
P(C or E) =
*Remember to simplify.*
*Remember to simplify.*
a)
2/8
b)
1/4
c)
4/8
d)
1/2
22.
You pick a marble from this bag.
What is the probability you will choose either a black or white marble?
What is the probability you will choose either a black or white marble?
a)
3/5
b)
9/100
c)
1/10
d)
2/5
23.
Which event is not a dependent event?
a)
Picking 2 students to each be line leader and door holder from a group of 20 students
b)
Picking 2 marbles from a bag without replacing the first marble
c)
Picking 2 crayons from a box at the same time (simultaneously)
d)
Picking an earring, replacing it, then picking a 2nd earring
100 %
