# Probability-Conditional Probability (ISS Statistics Paper I (New 2016 MCQ Pattern)): Questions 1 - 4 of 5

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## Question number: 1

» Probability » Conditional Probability

MCQ▾

### Question

In describing the survival rate and life expectancy in a certain population, let denote the event of reaching the age of years and be the corresponding probability. If then, what is the probability that a 50 years old will die within 5 years?

### Choices

Choice (4) Response

a.

0.253

b.

c.

0.965

d.

Question does not provide sufficient data or is vague

## Question number: 2

» Probability » Conditional Probability

MCQ▾

### Question

Four cards are drawn in succession without replacement from a standard deck. At each draw, all the remaining cards in the deck are equally likely. What is the probability of the color sequence red-red-black-red?

### Choices

Choice (4) Response

a.

0.0624

b.

0.6245

c.

0.0526

d.

None of the above

## Question number: 3

» Probability » Conditional Probability

MCQ▾

### Question

Your neighbor has 2 children. You learn that he has a son, Rahul. What is the probability that Rahul’s sibling is a brother?

### Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

## Question number: 4

» Probability » Conditional Probability

MCQ▾

### Question

Consider the college applicant who has determined that he has 0.80 probability of acceptance and that only 60 % of the accepted students will receive dormitory housing. Of the accepted students who receive dormitory housing, 80 % will have at least one roommate. What is the probability of being accepted and receiving dormitory housing and having no roommates?

### Choices

Choice (4) Response

a.

0.088

b.

0.096

c.

0.085

d.

0.074

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