BUAL 2600 Exam 2 Gupta || A+ GRADED!!
A ________ is a measure of the chance that an uncertain event will occur. correct answers
probability
The ________ of two events X and Y is another event that consists of the sample space
outcomes belonging to either event X or event Y or both events X and Y. correct answers union
P(AUB) = P(A) + P(B) − P(A∩B) represents the formula for the ________. correct answers
addition rule
A process of observation that has an uncertain outcome is referred to as a(n) ________. correct
answers experiment
A probability may be interpreted as a long-run ________ frequency. correct answers relative
A(n) ________ probability is a probability assessment that is based on experience, intuitive
judgment, or expertise. correct answers subjective
Probabilities must be assigned to sample space outcomes so that the probability assigned to each
sample space outcome must be between ________, inclusive. correct answers 0 and 1
Which of the following is a valid probability value for a discrete random variable? correct
answers .2
The variable Employment Status, which can take either the value 1 for Employed or 0 for
Unemployed, is an example of a ________ random variable. correct answers √npq.
A discrete variable that can often be used to describe the number of occurrences of an event over
a specified interval of time or space is a ________ random variable. correct answers Poisson
A random variable that is defined to be the total number of successes in n trials is a ________
random variable. correct answers binomial
When p = .5, the binomial distribution will ________ be symmetric. correct answers always
A fair die is rolled 10 times. What is the average number of even number outcomes? correct
answers 5
A fair die is rolled 36 times. What is the standard deviation of the even number (2, 4, or 6)
outcomes? correct answers 3
The probability that a given computer chip will fail is .02. Find the probability that of 5 delivered
chips, exactly 2 chips will fail. correct answers .0038
A ________ is a measure of the chance that an uncertain event will occur. correct answers
probability
The ________ of two events X and Y is another event that consists of the sample space
outcomes belonging to either event X or event Y or both events X and Y. correct answers union
P(AUB) = P(A) + P(B) − P(A∩B) represents the formula for the ________. correct answers
addition rule
A process of observation that has an uncertain outcome is referred to as a(n) ________. correct
answers experiment
A probability may be interpreted as a long-run ________ frequency. correct answers relative
A(n) ________ probability is a probability assessment that is based on experience, intuitive
judgment, or expertise. correct answers subjective
Probabilities must be assigned to sample space outcomes so that the probability assigned to each
sample space outcome must be between ________, inclusive. correct answers 0 and 1
Which of the following is a valid probability value for a discrete random variable? correct
answers .2
The variable Employment Status, which can take either the value 1 for Employed or 0 for
Unemployed, is an example of a ________ random variable. correct answers √npq.
A discrete variable that can often be used to describe the number of occurrences of an event over
a specified interval of time or space is a ________ random variable. correct answers Poisson
A random variable that is defined to be the total number of successes in n trials is a ________
random variable. correct answers binomial
When p = .5, the binomial distribution will ________ be symmetric. correct answers always
A fair die is rolled 10 times. What is the average number of even number outcomes? correct
answers 5
A fair die is rolled 36 times. What is the standard deviation of the even number (2, 4, or 6)
outcomes? correct answers 3
The probability that a given computer chip will fail is .02. Find the probability that of 5 delivered
chips, exactly 2 chips will fail. correct answers .0038
