ACET (Actuarial Common Entrance Test) Statistics: Questions 64 - 69 of 81

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Question number: 64

» Continuous Random Variables » Definitions

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MCQ▾

Question

A variable that can assume any value between two given points is called -

Choices

Choice (4)Response

a.

Discrete random variable

b.

Continuous random variable

c.

Irregular random variable

d.

Uncertain random variable

Question number: 65

» Combinatorial Probability

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Question

If 10 % of pens manufactured by a company are defective. The probability that a box containing 12 pens contains exactly 2 defective pens is given by

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 66

» Continuous Random Variables » Standard Deviation

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Question

The arithmetic means of X and Y are 20 and 120 respectively. There standard deviations are 5 and 25 respectively. The correlation coefficient between them is 0.8. Find the regression equation of Y on X.

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 67

» Probabilities » Independence of Events

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Question

Two dice are thrown and the sums of the numbers on the faces up is noted. The probability that this sum being 11 is-

Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

Question number: 68

» Combinatorial Probability

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Question

In how many different ways can the letters of the word ‘DETAIL’ be arranged such that the vowels must occupy only the odd positions?

Choices

Choice (4)Response

a.

36

b.

100

c.

64

d.

90

Question number: 69

» Measures of Location » Mean

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Question

The mean of first prime numbers is

Choices

Choice (4)Response

a.

5.6

b.

3

c.

3.6

d.

7

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