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ECN 221 Midterm 2 Practice Test | Questions and Answers | 2025 Update. INSTRUCTOR
Kwaku Addae-Ankrah
Arizona State University
Current Score
QUESTION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
POINTS –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –
C C
TOTAL SCORE
–/100 0.0%
Due Date
MON, MAR 31, 2025
9:00 AM MST
Instructions Assignment Submission & Scoring
Assignment Submission
This practice test consists of questions from chapters 5, 6 & 7. The
For this assignment, you submit answers by
questions are for practice and preparation for the actual midterm 2. It does
question parts. The number of submissions
not mean that the exam questions will necessarily be the same questions.
remaining for each question part only changes if
you submit or change the answer.
Assignment Scoring
Your last submission is used for your score.
,1. [–/2 Points] DETAILS ASWSBE15 5.TB.001.
Which of the following is a characteristic of an experiment where the binomial probability distribution is applicable?
Exactly two outcomes are possible on each trial.
The trials are dependent on each other.
The experiment has at least two possible outcomes.
The probabilities of the outcomes changes from one trial.
2. [–/2 Points] DETAILS ASWSBE15 5.TB.003.
A probability distribution showing the probability of x successes in n trials, where the probability of success does not change from
trial to trial, is termed a
hypergeometric probability distribution.
uniform probability distribution.
normal probability distribution.
binomial probability distribution.
3. [–/2 Points] DETAILS ASWSBE15 5.TB.004.
A continuous random variable may assume
any numerical value in an interval or collection of intervals.
finite number of values in a collection of intervals.
an infinite sequence of values.
only the positive integer values in an interval.
, 4. [–/2 Points] DETAILS ASWSBE15 5.TB.008.
An experiment consists of determining the speed of automobiles on a highway by the use of radar equipment. The random variable
in this experiment is a random variable.
discrete
mixed type
continuous
multivariate
5. [–/2 Points] DETAILS ASWSBE15 5.TB.011. PRACTICE ANOTHER
Four percent of the customers of a mortgage company default on their payments. A sample of six customers is selected. What is the
probability that exactly two customers in the sample will default on their payments?
0.0014
0.0173
0.0204
0.0408
6. [–/2 Points] DETAILS ASWSBE15 5.TB.012. PRACTICE ANOTHER
Eighty percent of the students in a class of 100 are planning to go to graduate school. What is the standard deviation of this
binomial distribution?
4
10
16
80
This is a preview of the questions in your assignment, but it does not reflect all assignment settings. Open the student view to interact with
the actual assignment.
Show answer key SHOW NEW RANDOMIZATION EDIT ASSIGNMENT
ECN 221 Midterm 2 Practice Test | Questions and Answers | 2025 Update. INSTRUCTOR
Kwaku Addae-Ankrah
Arizona State University
Current Score
QUESTION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
POINTS –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –/2 –
C C
TOTAL SCORE
–/100 0.0%
Due Date
MON, MAR 31, 2025
9:00 AM MST
Instructions Assignment Submission & Scoring
Assignment Submission
This practice test consists of questions from chapters 5, 6 & 7. The
For this assignment, you submit answers by
questions are for practice and preparation for the actual midterm 2. It does
question parts. The number of submissions
not mean that the exam questions will necessarily be the same questions.
remaining for each question part only changes if
you submit or change the answer.
Assignment Scoring
Your last submission is used for your score.
,1. [–/2 Points] DETAILS ASWSBE15 5.TB.001.
Which of the following is a characteristic of an experiment where the binomial probability distribution is applicable?
Exactly two outcomes are possible on each trial.
The trials are dependent on each other.
The experiment has at least two possible outcomes.
The probabilities of the outcomes changes from one trial.
2. [–/2 Points] DETAILS ASWSBE15 5.TB.003.
A probability distribution showing the probability of x successes in n trials, where the probability of success does not change from
trial to trial, is termed a
hypergeometric probability distribution.
uniform probability distribution.
normal probability distribution.
binomial probability distribution.
3. [–/2 Points] DETAILS ASWSBE15 5.TB.004.
A continuous random variable may assume
any numerical value in an interval or collection of intervals.
finite number of values in a collection of intervals.
an infinite sequence of values.
only the positive integer values in an interval.
, 4. [–/2 Points] DETAILS ASWSBE15 5.TB.008.
An experiment consists of determining the speed of automobiles on a highway by the use of radar equipment. The random variable
in this experiment is a random variable.
discrete
mixed type
continuous
multivariate
5. [–/2 Points] DETAILS ASWSBE15 5.TB.011. PRACTICE ANOTHER
Four percent of the customers of a mortgage company default on their payments. A sample of six customers is selected. What is the
probability that exactly two customers in the sample will default on their payments?
0.0014
0.0173
0.0204
0.0408
6. [–/2 Points] DETAILS ASWSBE15 5.TB.012. PRACTICE ANOTHER
Eighty percent of the students in a class of 100 are planning to go to graduate school. What is the standard deviation of this
binomial distribution?
4
10
16
80
