Statistics and Probability-Random Variable as Function on a Sample Space [NDA (National Defense Academy) Mathematics]: Questions 1 - 5 of 5

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Question 1

Appeared in Year: 2012

Question MCQ▾

  1. A continuous random variable can take all value in an interval.
  2. A random variable which take a finite number of values is necessarily discrete.
  3. Construction of a frequency distribution is based on data, which are discrete.

Which of the above statements are correct?

Choices

Choice (4)Response

a.

and only

b.

and only

c.

and only

d.

and

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Question 2

Question MCQ▾

Calculate the sum of the series

Choices

Choice (4)Response

a.

674897119

b.

8245991

c.

704811971

d.

Question does not provide sufficient data or is vague

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Question 3

Question MCQ▾

Find the fraction equivalent to the recurring decimals

Choices

Choice (4)Response

a.

0.56

b.

5.21

c.

1.02

d.

3.9

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Question 4

Appeared in Year: 2022

Question MCQ▾

The probability that a randomly chosen matrix with all the entries from the set of first 10 primes, is singular, is equal to: (29 June Morning Shift)

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 5

Appeared in Year: 2022

Question MCQ▾

Let X be a random variable having binomial distribution . If , then the sum of the mean and the variance of X is: (Phase 1 27 June 2022 Morning Shift)

Choices

Choice (4)Response

a.

b.

c.

d.

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