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Questions and Answers
If a certain event has a probability of 0.6, what is the probability of the event not happening?
If a certain event has a probability of 0.6, what is the probability of the event not happening?
- 0.5
- 0.3
- 0.6
- 0.4 (correct)
What is the formula to calculate variance?
What is the formula to calculate variance?
- Variance = E(X) - (Σ X2 × P(X))
- Variance = E(X) + (X2 × P(X))
- Variance = Σ (X2 × P(X)) - (E(X))2 (correct)
- Variance = (E(X))2 - Σ (X2 × P(X))
What does the expected value represent in probability theory?
What does the expected value represent in probability theory?
- The most likely outcome
- The middle value of a probability distribution (correct)
- The maximum possible outcome
- The lowest possible outcome
If a fair coin is tossed, what is the probability of getting a head?
If a fair coin is tossed, what is the probability of getting a head?
What is the probability of selecting a male student from the given school?
What is the probability of selecting a male student from the given school?
When rolling a fair die, what is the probability of rolling a number greater than 3?
When rolling a fair die, what is the probability of rolling a number greater than 3?
In the bag of numbered balls example, what is the probability of drawing an odd-numbered ball?
In the bag of numbered balls example, what is the probability of drawing an odd-numbered ball?
What is the probability of an impossible event occurring?
What is the probability of an impossible event occurring?
What is the probability that at least one highly valued accountant is chosen when 4 accounts are selected?
What is the probability that at least one highly valued accountant is chosen when 4 accounts are selected?
In the merchant's file with 20 accounts, how many delinquent accounts are present?
In the merchant's file with 20 accounts, how many delinquent accounts are present?
What is the probability of finding exactly 2 delinquent accounts when 5 accounts are randomly selected for examination?
What is the probability of finding exactly 2 delinquent accounts when 5 accounts are randomly selected for examination?
List the elements of relation R1 on set A = {1, 2, 3, 4} where R1={(x, y): x is divisible by y}.
List the elements of relation R1 on set A = {1, 2, 3, 4} where R1={(x, y): x is divisible by y}.
In the relation S on set A = {1, 2, 3, 4}, what ordered pairs are included if S={(x, y): x + y is even}?
In the relation S on set A = {1, 2, 3, 4}, what ordered pairs are included if S={(x, y): x + y is even}?
Is the relation 'R' defined on set A = {1, 2, 3, 4} reflexive?
Is the relation 'R' defined on set A = {1, 2, 3, 4} reflexive?
If a student plays either football or basketball, what is the probability of this event?
If a student plays either football or basketball, what is the probability of this event?
If 3 men are picked at random from a company of 20, where 5 are graduates, what is the probability that at least one of them is a graduate?
If 3 men are picked at random from a company of 20, where 5 are graduates, what is the probability that at least one of them is a graduate?
An urn contains 7 red and 4 blue balls. If a ball is drawn and replaced, then another ball is drawn, what is the probability of getting one ball of each color?
An urn contains 7 red and 4 blue balls. If a ball is drawn and replaced, then another ball is drawn, what is the probability of getting one ball of each color?
One bag contains 4 white and 2 black balls, while another contains 3 white and 5 black balls. If a ball is drawn from each bag, what is the probability that one ball is white and the other is black?
One bag contains 4 white and 2 black balls, while another contains 3 white and 5 black balls. If a ball is drawn from each bag, what is the probability that one ball is white and the other is black?
A bag contains 10 books, of which 4 are defective, and another bag contains 7 books, of which 2 are defective. If a book is drawn at random from each bag, what is the probability that both books are non-defective?
A bag contains 10 books, of which 4 are defective, and another bag contains 7 books, of which 2 are defective. If a book is drawn at random from each bag, what is the probability that both books are non-defective?
In a group of 10 people consisting of 3 economists, 4 engineers, 2 statisticians and 1 doctor, what is the probability that a committee of 4 formed from this group has at least one economist?
In a group of 10 people consisting of 3 economists, 4 engineers, 2 statisticians and 1 doctor, what is the probability that a committee of 4 formed from this group has at least one economist?
What is the probability that an examinee selected from the group is a MBA degree holder?
What is the probability that an examinee selected from the group is a MBA degree holder?
What is the probability that an examinee with a score above 60 has a B.Sc degree?
What is the probability that an examinee with a score above 60 has a B.Sc degree?
What is the probability that an examinee with a B.A degree has a score below 50?
What is the probability that an examinee with a B.A degree has a score below 50?
What is the probability that an examinee with a B.Sc degree has a score above 60?
What is the probability that an examinee with a B.Sc degree has a score above 60?
What is the probability that a manager reaches a wrong decision?
What is the probability that a manager reaches a wrong decision?
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