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Worksheetsprobability
Total questions: 55
Worksheet time: 28mins
if happening of an event is certain,then probability is equal to ......
0
1
if the happening of an event is absolutely uncertain,then the probability will be....
0
1
investment is a probability method that can increase the profitability and success of a business
true
false
decision making in business involves uncertainity
true
false
an experiment is a process that produces (a)
the outcome of an experiment is called (a)
tossing of coin is an
complementary event
dependent event
manually exclusive event
independent event
set of all possible outcomes of an event is called (a)
sample space is denoted by....
S
s
SS
ss
which of the following is not a probability assigning technique
classical technique
relative frequency technique
subjective approach
none of these
which probability assigning technique is not based on mathematics but its importance in decision making cannot be ignored?
classical technique
relative frequency technique
subjective approach
in which method, probability is defined as the proportion of times an event occurs in a large number of trails?
classical technique
relative frequency technique
subjective approach
the study of probability provides a basis of inferential statistics
true
false
to make rational decisions it is important that we have sound knowledge of probability theory
true
false
sound knowledge lost probability and probabilistic distributions helping help in developing probabilistic decision Model
true
false
(a) is likelihood our chance that a particular event will or will not occur
.... ....is a systematic drawing of sets that demonstrates the relationship between 2 sets
(a)
the joint occurrence of two or more simple events is called a (a)
two events are said to be........ ......if the occurrence or non occurrence of one is not affected by the occurrence or non occurrence of the other
(a)
two or more events are said to be (a) if the occurrence of one event influences the occurrence of the other
A schematic drawing of sets that demonstrates the relationship between two sets is called
Venn Diagram
Union
Intersection
Probability Tree
Simple event is also called
Event Space
Sample Space
Elementary Event
Independent Event
Compound events can be independent events or dependent events
True
False
Which of the following diagrams indicates the best relation between Travelers, Train and Bus ?
Which of the following diagrams indicates the best relation between Women, Mothers and Engineers ?
Which of the following diagrams indicates the best relation between Factory, Product and Machinery ?
'∪' represents
Union
Intersection
'∩' represents
Union
Intersection
A simple event event can have multiple possible outcomes
True
False
A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?
3/10
3/9
1/9
1/3
A bag contains 9 green marbles, 5 yellow marbles and 6 red marbles. You choose one marble. What is the probability of selecting a green or red marble? Do you add or multiply probabilities?
Add
Multiply
Two fair coins are tossed. What is the probability of getting at most one head?
1/2
3/4
1/4
1
A coin is tossed and a number cube is rolled. Find the probability, P(heads and 7).
1/14
1/2
0
1/7
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?
5/6
1/3
3/2
2
The chart above represents the number of marbles in a jar.
P(green) =
5/19
11/19
7/19
10/19
A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?
1/10
2
7/10
3/10
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?
1/9
2/9
5/21
10/21
1/9
2/9
5/21
10/21
In a drawer, there are 6 white socks, 4 black socks, and 2 brown socks. You pick out a sock, replace it, then pick out a 2nd sock. What is the probability that you will pick a brown, then black sock?
1/11
1/18
1/36
2/33
You roll two die.
What is the probability you will roll a 4, then roll a number less than 3?
1/36
1/18
1/9
1/6
A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?
5/11
15/6
1/3
5
In a cup are the numbers 1 - 20. Find the theoretical probability of
picking an even number.
1/2
1/20
1
2
In a cup are the numbers 1 - 20. Find the theoretical probability of
picking a number divisible by 5.
1/5
1/4
An experiment consists of rolling a fair number cube. Find the theoretical probability of rolling a 3.
1/6
1/2
An experiment consists of rolling a fair number cube. Find the theoretical probability of rolling a number greater than 3.
4, 5, 6
3/6
3
1/4
An experiment consists of rolling a fair number cube. Find the theoretical probability of rolling an 8.
0
1/8
2/8
1
What is probability?
The ratio of favorable outcomes to the total number of possible outcomes
The ratio of favorable outcomes to the total number of trials in an experiment
In probability, a controlled, repeated process (such as repeatedly tossing a coin).
A single possible result
An automobile dealer decides to select a month for its annual sale. Find the probability that it will be September or October.
1/12
1/6
1/4
5/6
At a community swimming pool there are 2 managers, 8 lifeguards, 3 concession stand clerks, and 2 maintenance people. If a person is selected at random, find the probability that the person is either a lifeguard or a manager.
2/3
8/15
2/15
Not enough information
At a particular school with 200 male students, 58 play football, 40 play basketball, and 8 play both. What is the probability that a randomly selected male student plays neither sport?
49/100
29/100
51/100
9/20
In a statistics class there are 18 juniors and 10 seniors; 6 of the seniors are females, and 12 of the juniors are males. If a student is selected at random, find the probability of selecting a junior or a female.
6/7
3/7
9/14
3/14
A store sells shirts that are either small, medium, or large. The colors are either red, blue, green, or white. What is the probability someone will select a large green shirt?
1/3
1/7
1/9
1/12
Robin has five different pairs of shoes that match with 6 different pairs of socks. How many shoes-and-socks combinations can she make if she selects one pair of shoes and one pair of socks?
1
30
5!
6!
A bag has 3 red marbles, 2 blue and 4 yellow. What is the probability of pulling a red?
3/10
3/9
1/9
1/3
A bag of marbles contains 5 red, 7 purple, and 3 blue marbles. If one marble is chosen at random, what is the probability that the marble is NOT blue?
4/5
1/5
3/5
2/5
If I flip a coin 10 times, what is the probability of getting heads?
1
10
3
5
