# ACET (Actuarial Common Entrance Test) Statistics: Questions 146 - 150 of 201

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## Question number: 146

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MCQ▾

### Question

Let X be a discrete random variable with the following PMF

Find

### Choices

Choice (4)Response

a.

0.5

b.

0.1

c.

0.2

d.

0.4

## Question number: 147

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MCQ▾

### Question

A doctor is to visit a patient. From the past experience, it is known that the probabilities that he will come by train, bus, scooter or by other means of transport are respectively The probabilities that he will be late are if he comes by train, bus and scooter respectively, but if he comes by other means of transport, then he will not be late. When he arrives, he is late. What is the probability that he comes by train?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 148

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MCQ▾

### Question

A spinner is divided into five equal sections numbered 1 to 5. The arrow is equally likely to land on any section. Calculated the mean of the probability experiment.

### Choices

Choice (4)Response

a.

b.

3

c.

15

d.

## Question number: 149

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MCQ▾

### Question

The number of permutations that can be made out of the letters of the word “ENTRANCE” so that the two Ns are always together?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 150

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MCQ▾

### Question

The length of telephone conversation in a booth has been on exponential distribution & found on an average to be 5 minutes. Find the probability that a random call made from this ends less than five minutes.

### Choices

Choice (4)Response

a.

b.

c.

d.

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