Question 1

1.Which of the following explains why the table below is not a probability distribution?                           
    X 	2	            4  	   6	          8	          10
P(X)	0.15	0.15	0.15	0.15	0.15

Accepted Answer

The sum of the probabilities must be equal to 1

Answer

The probability cannot assume values that are less than 0

Answer

The random variable must be a real number

Answer

The probability cannot assume values

Question 2

2. One of the three basic interpretations of probability where the probability of an event is determined by carrying out an experiment

Accepted Answer

Empirical Probability

Answer

Subjective Probability

Answer

Probability Distribution

Answer

. Classical Probability

Question 3

3. Which of the following is NOT an example of discrete random variable?

Accepted Answer

The average amount of electricity consumed per household per month

Answer

The number of female athletes

Answer

The number of defective computers produced by a manufacturer

Answer

The number of dropouts in a school district for a period of 10 years.

Question 4

4. It is a way of presenting probability distribution using vertical bars placed side by side.

Accepted Answer

Histogram

Answer

Frequency Polygon

Answer

All of the Above

Answer

Normal Distribution

Question 5

5. Which of the following statements is TRUE?

Accepted Answer

A random variable is discrete if its set of possible outcomes is countable

Answer

The probability of each value in a probability distribution should be more than or equal to one and less than or equal to zero.

Answer

Sampling distribution refers to the values of random variables and the probability assigned to them

Answer

Classical probability is based on an educated guess or estimate.

Question 6

6. Which of the following quantities is equal to the expected value of the discrete random variable?

Accepted Answer

Mean

Answer

Mass Function

Answer

Variance

Answer

Standard Deviation

Question 7

7. Which of the following is an example of continuous random variable?

Accepted Answer

The amount of rainfall in a randomly selected time

Answer

The number of mistakes a student makes in an exam

Answer

The number of left-handed persons in a classroom

Answer

The year of birth of a randomly selected student

Related quizzes

Related quizzes