WorksheetsProbability
Total questions: 40
Worksheet time: 2hrs 55mins
Name
Class
Date
1.
Which is the best way to represent answering 25 multiple-choice questions with 4 choices for each answer?
a)
spin a spinner with four sections 25 times
b)
roll a die 25 times
c)
flip a coin 25 times
d)
roll a die 4 times
2.
A certain brand of TV has a 50% chance of being defective. Which model could be used to determine the probability that when two TVs are chosen, they will both be defective?
a)
spin a spinner with 4 equal sections
b)
roll a die twice
c)
flip a coin twice
d)
flip a coin, then roll a die
3.
Samuel has 5 different colors of pens and 2 different colors of paper. Which model could be used to show how many different choices he has?
a)
spin a spinner with 5 sections, then flip a coin
b)
roll a die 5 times
c)
flip a coin 5 times
d)
roll a die, then flip a coin 5 times
4.
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
5.
What statement does the shaded region represent
a)
A or B
b)
Not A
c)
A and B
d)
Not B
6.
What percentage of the days that it rained, did they forecast no rain?
a)
About 20%
b)
About 18%
c)
About 14%
d)
About 12%
7.
What percentage of girls have blonde hair?
a)
30%
b)
32%
c)
29%
d)
40%
8.
How many senior boys play football or wrestle?
a)
9
b)
21
c)
30
d)
39
9.
A bag contains 5 red marbles and 4 pink marbles. A marble is randomly drawn and then replaced. What is the probability the first marble is pink and the second is red?
a)
26.9%
b)
24.7%
c)
20.0%
d)
5%
10.
A day in the year is randomly chosen. Given the day is in the month of December, what is the probability the day is the 25th? (December has 31 total days.)
a)
8.5%
b)
8.84%
c)
80.6%
d)
3.2%
11.
What is the probability that the person picked will be a boy given they speak german?
a)
.7273
b)
.4
c)
.16
d)
.22
12.
What is the probability that a female is chosen given they like a Toyota?
a)
.525
b)
.4627
c)
.6774
d)
.3143
13.
What is the probability that they speak French given that they are a girl?
a)
2.14
b)
.24
c)
.4
d)
.8571
14.
What is the probability that a student plays an instrument?
a)
.55
b)
.5
c)
.45
d)
.4
15.
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
16.
A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement. P(1st orange then green)
a)
1/15
b)
2/15
c)
3/31
d)
1/5
17.
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. What is the probability that the coin is a nickle both times?
a)
36/169
b)
6/13
c)
5/16
d)
3/19
18.
A basket contains four apples and six peaches. You randomly select one piece of fruit and eat it. Then you randomly select another piece of fruit. What is the probability that both pieces of fruit are apples.
a)
2/15
b)
3/17
c)
1/19
d)
6/21
19.
There are seven boys and seven girls in a class. The teacher randomly selects one student to answer a question. Later, the teacher randomly selects a different student to answer another question. What is the probability that the first student is a boy and the second student is a girl?
a)
7/26
b)
1/2
c)
2/17
d)
8/29
20.
Each of the letters in MATHEMATICS are on separate cards, face down on a table. If you pick a card at random, and then another card without replacement what is the probability that both card will be a vowel?
a)
4/11
b)
16/121
c)
7/21
d)
6/55
21.
What is the probability of spinning a red if we spin 30 times?
a)
1/5
b)
1/30
c)
3/30
d)
1/10
22.
What is the probability of selecting an orange candy?
a)
0%
b)
25%
c)
50%
d)
100%
23.
A farm has 5 brown cows and 10 white cows. A fence is open and two cows escape. What is the probability that it will be a brown cow, then a white cow?
a)
1/9
b)
2/9
c)
5/21
d)
10/21
24.
Suppose you have five books in your book bag. Three are novels, one is a biography, and one is a poetry book. Today you grab one book out of your bag without looking, and return it later. Tomorrow you do the same thing. What is the probability that you grab a novel both days?
a)
3/5
b)
6/10
c)
6/25
d)
9/25
25.
A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?
a)
5/6
b)
1/2
c)
1/3
d)
1/6
26.
The chart below represents the number of marbles in a jar.
P(green) =
P(green) =
a)
5/19
b)
10/28
c)
5/14
d)
17/38
27.
Christopher picks a marble at random. Without putting the first marble back, he picks a second marble at random. Is this even Dependent or Independent?
a)
Independent
b)
Dependent
28.
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
29.
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
30.
P(not A) =
*Remember to simplify.*
*Remember to simplify.*
a)
5/8
b)
3/4
c)
2/8
d)
1/4
31.
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
32.
What is the probability of flipping a coin and getting heads?
a)
1/2
b)
1/3
c)
1/4
d)
Never, Tails never fails.
33.
A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?
a)
3/10
b)
3/9
c)
1/9
d)
1/3
34.
What is the probability of selecting a cherry piece?
a)
3/12
b)
12/12
c)
5/12
d)
50%
35.
Shannon has a bag of jelly beans. She removed one jelly bean, recording the color, and then replaced it. She repeated the process several times and record her results in the table. What is the experimental probability of her selecting a red jelly bean?
a)
11/33
b)
1/3
c)
1/4
d)
18/26
36.
How many total outfit options are represented?
a)
12
b)
22
c)
3
37.
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
38.
Theoretical Probability is?
a)
What Should happen
b)
What does happen
c)
What Will Happen
d)
What I want to Happen
39.
Experimental probability is: number of times the event occurs/total number of trials
a)
True
b)
False
40.
What is the probability of spinning a shade of blue?
a)
1/5
b)
2/5
c)
3/5
d)
4/6
100 %
