QMB 3200 Test 1
A binomial test is carried out wherein 30 dishwashers are randomly selected from a
production plant and examined to decide whether or not or not they feature well. Any specific
dishwasher will work nicely with a opportunity of p = .98. What is the random variable in this
test?
A. The 30 dishwashers
b. One dishwasher and whether it works well
c. The probability that the dishwasher works well
d. The wide variety that works well form the 30 selected - ANS-d. The wide variety that
works nicely shape the 30 selected
A non-stop random variable might also count on
a. Any price in an interval or series of intervals
b. Best integer values in an c programming language or series of intervals
c. Handiest fractional values in an interval or collection of intervals
d. Only the fantastic integer values in an c language - ANS-a. Any value in an c program
languageperiod or series of intervals
A chance near zero suggests ________? - ANS-an event is pretty not going to arise
A possibility close to 1 shows ________? - ANS-an event is sort of positive to occur
A random variable:
a. May be labeled as being non-stop
b. Can be categorised as being discrete
c. Is a numerical description of the final results of an test
d. All of these selections are accurate - ANS-d. All of these choices are accurate
A table or rule that assigns probabilities to the feasible values of a discrete random variable
X is referred to as the:
a. Probability characteristic
b. Predicted value
c. Conditional opportunity
d. 5-wide variety summary - ANS-a. Chance feature
An event is:
a. A collection of sample factors
b. A collection of similarly likely activities
c. A group of pattern approach
d. A set of sample factors which might be all identical - ANS-a. A group of pattern factors
An experiment includes four feasible consequences with P(E1) =.25, P(E2) =.10, and P(E3)
=.20. The probability of final results E4 is:
a. .50
, b. 1
c. .Fifty five
d. .45 - ANS-d. .Forty five
An experiment includes surveying 50 clients at a nearby vehicle dealership. The random
variable in this test is the quantity of mins a consumer spends on the dealership. This
random variable is a:
a. Continuous random variable
b. Discrete random variable
c. Complex random variable
d. None of these alternatives - ANS-a. Non-stop random variable
How do you locate the variety? - ANS-biggest value minus smallest value
If a statistics set has an atypical number of observations, the median
a. Cannot be decided
b. Is the cost of the middle item whilst all objects are arranged in ascending order
c. Is the average fee of the 2 center objects whilst all objects are organized in ascending
order.
D. Need to be same to the mean - ANS-b. Is the price of the middle object while all objects
are arranged in ascending order
If a facts set has n factors then _______? - ANS-it contains n observations
If a random variable can expect one of five effects and the distribution is uniform, what's the
possibility characteristic for this random variable?
A. F(x) = 1/5x
b. F(x) = 5
c. F(x) = .20
d. F(x) = x^5 - ANS-c. F(x) = .20
If an test has n viable outcomes, the classical technique could assign what probability? -
ANS-1/n to each final results
In a survey of customers at a music shop the age of the individual became recorded and is
proven under. What is the possibility that a randomly selected customer is among the age of
15 and 19?
Age / Number of Customers
15-
20-14 / forty two
25-
30+ / 19
a. .25
b. .04
c. .Forty two
d. .20 - ANS-d. .20
Of the passengers on a 757 airliner, 40% are female. A random pattern of 25 passengers is
selected. What is the expected wide variety of female passengers in the sample?
A. 6
b. 10
A binomial test is carried out wherein 30 dishwashers are randomly selected from a
production plant and examined to decide whether or not or not they feature well. Any specific
dishwasher will work nicely with a opportunity of p = .98. What is the random variable in this
test?
A. The 30 dishwashers
b. One dishwasher and whether it works well
c. The probability that the dishwasher works well
d. The wide variety that works well form the 30 selected - ANS-d. The wide variety that
works nicely shape the 30 selected
A non-stop random variable might also count on
a. Any price in an interval or series of intervals
b. Best integer values in an c programming language or series of intervals
c. Handiest fractional values in an interval or collection of intervals
d. Only the fantastic integer values in an c language - ANS-a. Any value in an c program
languageperiod or series of intervals
A chance near zero suggests ________? - ANS-an event is pretty not going to arise
A possibility close to 1 shows ________? - ANS-an event is sort of positive to occur
A random variable:
a. May be labeled as being non-stop
b. Can be categorised as being discrete
c. Is a numerical description of the final results of an test
d. All of these selections are accurate - ANS-d. All of these choices are accurate
A table or rule that assigns probabilities to the feasible values of a discrete random variable
X is referred to as the:
a. Probability characteristic
b. Predicted value
c. Conditional opportunity
d. 5-wide variety summary - ANS-a. Chance feature
An event is:
a. A collection of sample factors
b. A collection of similarly likely activities
c. A group of pattern approach
d. A set of sample factors which might be all identical - ANS-a. A group of pattern factors
An experiment includes four feasible consequences with P(E1) =.25, P(E2) =.10, and P(E3)
=.20. The probability of final results E4 is:
a. .50
, b. 1
c. .Fifty five
d. .45 - ANS-d. .Forty five
An experiment includes surveying 50 clients at a nearby vehicle dealership. The random
variable in this test is the quantity of mins a consumer spends on the dealership. This
random variable is a:
a. Continuous random variable
b. Discrete random variable
c. Complex random variable
d. None of these alternatives - ANS-a. Non-stop random variable
How do you locate the variety? - ANS-biggest value minus smallest value
If a statistics set has an atypical number of observations, the median
a. Cannot be decided
b. Is the cost of the middle item whilst all objects are arranged in ascending order
c. Is the average fee of the 2 center objects whilst all objects are organized in ascending
order.
D. Need to be same to the mean - ANS-b. Is the price of the middle object while all objects
are arranged in ascending order
If a facts set has n factors then _______? - ANS-it contains n observations
If a random variable can expect one of five effects and the distribution is uniform, what's the
possibility characteristic for this random variable?
A. F(x) = 1/5x
b. F(x) = 5
c. F(x) = .20
d. F(x) = x^5 - ANS-c. F(x) = .20
If an test has n viable outcomes, the classical technique could assign what probability? -
ANS-1/n to each final results
In a survey of customers at a music shop the age of the individual became recorded and is
proven under. What is the possibility that a randomly selected customer is among the age of
15 and 19?
Age / Number of Customers
15-
20-14 / forty two
25-
30+ / 19
a. .25
b. .04
c. .Forty two
d. .20 - ANS-d. .20
Of the passengers on a 757 airliner, 40% are female. A random pattern of 25 passengers is
selected. What is the expected wide variety of female passengers in the sample?
A. 6
b. 10
