COMM-215-2194-FF Summative Quiz Summative Quiz W2020 (Covers Chapters 1 to 6) - February 23rd, 2026 at
18:00 until 22:00
Started on Sunday, 23 February 2026, 6:01 PM
State Finished
Completed on Sunday, 23 February 2026, 7:41 PM
Time taken 1 hour 40 mins
Grade 50.00 out of 72.00 (69%)
Question 1
Consider two events A and B. Which of the following statements is true?
Incorrect
Mark 0.00 out of Select one:
1.50 a. None of the suggested answers are correct
b. If the probability of A given B is 0.4, then the probability of A given the complement
of B is 0.6.
c. If the probability of A given B is 0.4, then the probability of the complement
of A given B is 0.6.
d. If the probability of A given B is 0.4, then the probability of the complement
of A given the complement of B is 0.6.
e. If the probability of A given B is 0.4 and the probability of A is 0.4, then
events A and B are mutually exclusive.
The correct answer is: If the probability of A given B is 0.4, then the probability of the
complement of A given B is 0.6.
Question 2
Which of the following statements is correct?
Incorrect
Mark 0.00 out of Select one:
1.50 a. Descriptive statistics are used to transform information into data
b. An audit of accounts receivable will generally be based on a population
c. None of the suggested answers are correct
d. Ratio data indicate rank only from a natural zero
e. The role of inferential statistics is to help understand the characteristics of the
sample
The correct answer is: None of the suggested answers are correct
/
, Question 3
Which of the following statements is incorrect?
Correct
Mark 1.50 out of Select one:
1.50 a. None of the suggested answers are correct
b. A categorical variable may produce ordinal data
c. Nominal data may be described as quantitative
d. A discrete numerical variable may produce ratio scale data
e. Ordinal data may be described as qualitative
The correct answer is: Nominal data may be described as quantitative
Question 4
Consider the terms: information, data, and knowledge. From a statistical standpoint, list
Correct these terms in order of increasing usefulness in making decisions.
Mark 1.50 out of
1.50 Select one:
a. Data, information, and knowledge
b. Knowledge, data, and information
c. Knowledge, information, and data
d. None of the suggested answers are correct
e. Information, data, and knowledge
The correct answer is: Data, information, and knowledge
Question 5
If X is a normal random variable with mean 𝜇 = 50, and standard deviation 𝜎= 5, then
Correct
Mark 1.50 out of Select one:
1.50 a. P(X = 55) = 1 - P(X > 55)
b. None of the suggested answers are correct
c. P(X = 55) = 0
d. P(X = 55) = P(56 ≤ X ≤ 54)
e. P(X = 55) = 1 - P(X < 55)
The correct answer is: P(X = 55) = 0
/
18:00 until 22:00
Started on Sunday, 23 February 2026, 6:01 PM
State Finished
Completed on Sunday, 23 February 2026, 7:41 PM
Time taken 1 hour 40 mins
Grade 50.00 out of 72.00 (69%)
Question 1
Consider two events A and B. Which of the following statements is true?
Incorrect
Mark 0.00 out of Select one:
1.50 a. None of the suggested answers are correct
b. If the probability of A given B is 0.4, then the probability of A given the complement
of B is 0.6.
c. If the probability of A given B is 0.4, then the probability of the complement
of A given B is 0.6.
d. If the probability of A given B is 0.4, then the probability of the complement
of A given the complement of B is 0.6.
e. If the probability of A given B is 0.4 and the probability of A is 0.4, then
events A and B are mutually exclusive.
The correct answer is: If the probability of A given B is 0.4, then the probability of the
complement of A given B is 0.6.
Question 2
Which of the following statements is correct?
Incorrect
Mark 0.00 out of Select one:
1.50 a. Descriptive statistics are used to transform information into data
b. An audit of accounts receivable will generally be based on a population
c. None of the suggested answers are correct
d. Ratio data indicate rank only from a natural zero
e. The role of inferential statistics is to help understand the characteristics of the
sample
The correct answer is: None of the suggested answers are correct
/
, Question 3
Which of the following statements is incorrect?
Correct
Mark 1.50 out of Select one:
1.50 a. None of the suggested answers are correct
b. A categorical variable may produce ordinal data
c. Nominal data may be described as quantitative
d. A discrete numerical variable may produce ratio scale data
e. Ordinal data may be described as qualitative
The correct answer is: Nominal data may be described as quantitative
Question 4
Consider the terms: information, data, and knowledge. From a statistical standpoint, list
Correct these terms in order of increasing usefulness in making decisions.
Mark 1.50 out of
1.50 Select one:
a. Data, information, and knowledge
b. Knowledge, data, and information
c. Knowledge, information, and data
d. None of the suggested answers are correct
e. Information, data, and knowledge
The correct answer is: Data, information, and knowledge
Question 5
If X is a normal random variable with mean 𝜇 = 50, and standard deviation 𝜎= 5, then
Correct
Mark 1.50 out of Select one:
1.50 a. P(X = 55) = 1 - P(X > 55)
b. None of the suggested answers are correct
c. P(X = 55) = 0
d. P(X = 55) = P(56 ≤ X ≤ 54)
e. P(X = 55) = 1 - P(X < 55)
The correct answer is: P(X = 55) = 0
/
