ACET (Actuarial Common Entrance Test) Statistics: Questions 133 - 137 of 201

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Question 133

Question

MCQ▾

A die is thrown twice and the sum of the numbers appearing is observed to be 6. What is the conditional probability that the number 4 has appeared atleast once?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 134

Question

MCQ▾

In a distribution, the difference between the third and first quartiles is 4 and their sum is 74. Find the skewness if median is 36.

Choices

Choice (4)Response

a.

b.

-0.5

c.

1

d.

0.25

Question 135

Question

MCQ▾

In an entrance test, there are multiple choice question. There are four possible answers to each question of which one is correct. The probability that a student knows the answer to a question is 90 % . If he gets the correct answer to a question, then find the probability that he was guessing.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 136

Question

MCQ▾

Following is an incomplete distribution having modal mark as 45

Incomplete Distribution Having Modal
Marks0 - 2020 - 4040 - 6060 - 8080 - 100
No. of Students58?125

What would be the mean marks?

Choices

Choice (4)Response

a.

52.22

b.

48

c.

46.67

d.

50

Question 137

Question

MCQ▾

Suppose you take a multiple choice test with 10 questions and each question has 5 answer choices (a, b, c, d, e) . What is the probability that you get exactly 4 questions correct just by guessing?

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

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