WorksheetsAt Least Probability
Total questions: 20
Worksheet time: 20mins
Which formula would you use in the following case? A research team at Cornell University conducted a study showing that approximately 10% of all businessmen who wear ties wear them so tightly that they actually reduce blood flow to brain, diminishing cerebral functions. At a board meeting of 20 businessmen, all of whom wear ties, what is the probability that at least one tie is too tight?
(a)
(b)
How do you set up equation for this one? An algebra 2 test has 6 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct?
(a)
(b)
(c)
How do you set up equation for this one? An algebra 2 test has 5 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 5 questions, what is the probability that you get at least 1 question correct?
(a)
(b)
(c)
(d)
How do you set up equation for this one? A survey found that 25% of pet owners had their pets bathed professionally rather than do it themselves. If 18 pet owners are randomly selected, find the probability that exactly 5 people have their pets bathed professionally.
(a)
(b)
(c)
(d)
Which formula would you use in the following case? If you were to flip a coin 20 times, what is the probability you would get exactly 10 heads?
(a)
(b)
Which formula would you use in the following case? A coin is tossed 5 times. What is the probability getting at least 1 heads?
(a)
(b)
What is "p" in the following scenario? An algebra 2 test has 6 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct?
1/2
1/6
1/3
1/4
What is "p" in the following scenario?
If you were to flip a coin 20 times, what is the probability you would get exactly 7 heads?
1/2
10
20
7/20
What is "p" in the following scenario?
A quarterback has a incomplete passing percentage of 30%. What is the probability that he does not complete exactly 8 of his 20 passes?
8/20
30
0.3
0.03
What is "p" in the following scenario? The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your school. What is the probability that at least 2 of the first 10 blood donors has Type B blood?
11
0.11
2/10
2
What is "q" in the equation?
Probability of success on a single trial
Probability of failure on a single trial
Binomial Probability (final answer)
What is "q" in the following scenario?
If you were to flip a coin 20 times, what is the probability you would get exactly 5 heads?
5/20
0.5
5
What is "q" in the following scenario?
A research team at Cornell University conducted a study showing that approximately 10% of all businessmen who wear ties wear them so tightly that they actually reduce blood flow to brain, diminishing cerebral functions. At a board meeting of 20 businessmen, all of whom wear ties, what is the probability that at least one tie is too tight?
1/20
0.1
0.9
What is "q" in the following scenario?
A quarterback has a incomplete passing percentage of 30%. What is the probability that he complete exactly 8 of his 20 passes?
8/20
0.3
0.7
What is "q" in the following scenario? The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your school. What is the probability that at least 2 of the first 10 blood donors has Type B blood?
0.89
0.11
2/10
What is n in this equation?
Number of trials
Number of successes
Number of failures
What is x in this equation?
Number of trials
Number of successes
Number of failures
How do you set up equation for this one? The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your school. What is the probability of getting exactly 2 of the first 10 blood donors has Type B blood?
(a)
(b)
(c)
All of the probabilities in a probability distribution add up to what?
0
10
1
.5
Determine which of the following distribution is NOT a probability distribution.
A
B
C
D
