Probability Distributions MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Probability Distributions, a fundamental topic in the field of Business Statistics. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Probability Distributions MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Probability Distributions mcq questions that explore various aspects of Probability Distributions problems. Each MCQ is crafted to challenge your understanding of Probability Distributions principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Business Statistics tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Probability Distributions MCQs are your pathway to success in mastering this essential Business Statistics topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Probability Distributions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Probability Distributions knowledge to the test? Let's get started with our carefully curated MCQs!

Probability Distributions MCQs | Page 5 of 9

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Q41.
The probability distribution of discrete random variable is classified as

a.

probability mass function

b.

posterior mass function

c.

interior mass function

d.

continuous mass function

Discuss
Answer: (a).probability mass function
Q42.
The standard normal probability distribution has mean equal to 40, whereas the value of random variable x is 80 and the z-statistic is equal to 1.8 then the standard deviation of standard normal probability distribution is

a.

120

b.

80

c.

40

d.

20

Discuss
Answer: (d).20
Q43.
In standard normal probability distribution, the z-score of distribution will be zero if

a.

x < ฮผ

b.

x > ฮผ

c.

x = ฮผ

d.

all of above

Discuss
Answer: (c).x = ฮผ
Q44.
If the value of ฮป is 9 and value of random variable x is 5 then the value of z-score is

a.

โˆ’2.58

b.

โˆ’1.86

c.

โˆ’2.34

d.

โˆ’1.34

Discuss
Answer: (d).โˆ’1.34
Q45.
The formula of calculating the expected value of random variable x of gamma distribution is as

a.

E(x) = n โ„ ฮผ

b.

E(x) = pq โ„ ฮผ

c.

E(x) = ฮผ โ„ np

d.

E(x) = ฮฑ โ„ ฮผ

Discuss
Answer: (a).E(x) = n โ„ ฮผ
Q46.
If the z-score of normal distribution is 2.5, the mean of the distribution is 45 and the standard deviation of normal distribution is 3 then the value of x for a normal distribution is

a.

97.5

b.

47.5

c.

37.5

d.

67.5

Discuss
Answer: (c).37.5
Q47.
If the ฮผ is equal to 25 then the value of mean for exponential probability distribution is

a.

0.4

b.

0.08

c.

0.07

d.

0.04

Discuss
Answer: (d).0.04
Q48.
The discrete probability distribution in which the outcome is very small with a very small period of time is classified as

a.

posterior distribution

b.

cumulative distribution

c.

normal distribution

d.

Poisson distribution

Discuss
Answer: (d).Poisson distribution
Q49.
Considering the normal distribution, the spread is increased and the height of the curve is decreased for the

a.

smaller value of variance

b.

larger value of variance

c.

larger value of standard deviation

d.

smaller value of standard deviation

Discuss
Answer: (c).larger value of standard deviation
Q50.
If the number of trials are 8 and the probability of success are 0.65 then the mean of negative probability distribution is

a.

8.65

b.

12.31

c.

5.2

d.

7.35

Discuss
Answer: (b).12.31
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