ECN 221 Midterm #2 Practice Test 2025 Arizona State University
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Midterm #2 Practice Test (Homework) 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 questions are
For this assignment, you submit answers by question
for practice and preparation for the actual midterm 2. It does not mean that the
parts. The number of submissions remaining for each
exam questions will necessarily be the same questions.
question part only changes if you submit or change the
answer.
Assignment Scoring
Your last submission is used for your score.
,1. [–/2 Points]DETAILSASWSBE15 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]DETAILSASWSBE15 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]DETAILSASWSBE15 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]DETAILSASWSBE15 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]DETAILSASWSBE15 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]DETAILSASWSBE15 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
Assignment Previewer
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
Midterm #2 Practice Test (Homework) 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 questions are
For this assignment, you submit answers by question
for practice and preparation for the actual midterm 2. It does not mean that the
parts. The number of submissions remaining for each
exam questions will necessarily be the same questions.
question part only changes if you submit or change the
answer.
Assignment Scoring
Your last submission is used for your score.
,1. [–/2 Points]DETAILSASWSBE15 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]DETAILSASWSBE15 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]DETAILSASWSBE15 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]DETAILSASWSBE15 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]DETAILSASWSBE15 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]DETAILSASWSBE15 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
