# ACET (Actuarial Common Entrance Test) Statistics: Questions 134 - 138 of 201

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## Question number: 134

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MCQ▾

### Question

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 number: 135

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MCQ▾

### Question

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 number: 136

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MCQ▾

### Question

Following is an incomplete distribution having modal mark as 45

 Marks 0 - 20 20 - 40 40 - 60 60 - 80 80 - 100 No. of Students 5 8 ? 12 5

What would be the mean marks?

### Choices

Choice (4)Response

a.

52.22

b.

48

c.

46.67

d.

50

## Question number: 137

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MCQ▾

### Question

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

## Question number: 138

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MCQ▾

### Question

Let be the values taken by a variable X and be the values taken by a variable Y such that . Then,

### Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

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