GE-4 Final Quiz

Question 1

19. The range of the following data set {5, 10, 15, 20, 25, 30, 35} is:

Accepted Answer

30

Question 2

9. Which statement about tautology is true?

Accepted Answer

A tautology is true in all possible truth conditions

Question 3

7. If A = {1, 2, 3} and B = {2, 4, 6}, what is the union of A & B?

Accepted Answer

{1, 2, 3, 4, 6}

Question 4

14. The primary objective of stratified sampling is to:

Accepted Answer

Ensure that subgroups are proportionally represented

Question 5

26. If P(A) = 0.6 and P(B) = 0.4, and A and B are mutually exclusive, what is P(A \cup B)?

Accepted Answer

1.0

Question 6

12. A normal distribution has a mean of 50 and a standard deviation of 10. What is the z-score of a value of 70?

Accepted Answer

2

Question 7

20. Which of the following is an example of a continuous variable?

Accepted Answer

Height of students in a class

Question 8

22. Which of the following is the variance of the data set {2, 4, 4, 4, 5, 5, 7, 9}?

Accepted Answer

4

Question 9

3. Which of the following sets represents only natural numbers?

Accepted Answer

{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ...}

Question 10

18. Which of the following is NOT a characteristic of a normal distribution?

Accepted Answer

Skewed to the right

Question 11

23. The 50th percentile of a data set is also known as the:

Accepted Answer

Median

Question 12

15. If a dataset has μ=15 & σ=5, what % of data falls within 1 standard deviation of the mean in a normal distribution?

Accepted Answer

68%

Question 13

30. The mean of four numbers is 71.5. If three of the numbers are 58, 76 and 88, what is the fourth number?

Accepted Answer

64

Question 14

1. Which of the following best defines a mathematical set?

Accepted Answer

An infinite series of values organized on a number line

Question 15

29. Which of the following measures is a measure of relative position?

Accepted Answer

Percentile

Question 16

27. Which of the following is a permutation?

Accepted Answer

Arranging 5 students in a line

Question 17

24. The probability that it will rain on Monday is 0.7. What is the probability that it will NOT rain on Monday?

Accepted Answer

0.3

Question 18

8. Which statement about tautology is true?

Accepted Answer

A tautology is true in all possible truth conditions

Question 19

25. In the context of probability, what does "mutually exclusive" mean?

Accepted Answer

Events that cannot happen at the same time

Question 20

28. What is the mode of the data set {2, 4, 4, 6, 8, 8, 8, 10}?

Accepted Answer

8

Question 21

5. Which of the following correctly defines a null set?

Accepted Answer

A set with no elements

Question 22

16. Calculate the mean of the data set {8, 12, 15, 20, 25}.

Accepted Answer

16

Question 23

11. What is the range of the data set {10, 20, 25, 30, 45}?

Accepted Answer

35

Question 24

4. Given A = {2, 4, 6, 8} and B = {4, 6, 8, 10}, what is A B?

Accepted Answer

{4, 6, 8}

Question 25

17. Which measure of dispersion describes the average distance of data points from the mean?

Accepted Answer

Standard deviation

Question 26

26. In the context of probability, what does "mutually exclusive" mean?

Accepted Answer

Events that cannot happen at the same time

Question 27

13. In statistics, what is the primary difference between a parameter and a statistic?

Accepted Answer

A parameter refers to a population, while a statistic refers to a sample

Question 28

10. Which of the following numbers has a z-score of 0?

Accepted Answer

The mean of the distribution

Question 29

21. If the area under a normal curve to the left of z = 1.25 is 0.8944, what is the area to the right of z = 1.25?

Accepted Answer

0.1056

Question 30

6. Which of the following ordered pairs does NOT form a function?

Accepted Answer

{(1, 2), (1, 3), (2, 4)}

Question 31

2. Identify the type of sequence demonstrated by the series: 2, 4, 8, 16, 32, ...

Accepted Answer

Geometric sequence

GE-4 Final Quiz

Questions 31

GE-4 Final Quiz

Questions 31