QUIZ STATISTICS FIB B9

If there are three different routes from X to Y and five different routes from Y to Z, determine how many routes are there from X to Z.

• 3

• 5

• 3X5=15

How many ways are there to choose 2 girls and 5 boys from 5 girls and 7 boys?

Let S is a sample space and A is an event. The probability of event A,  is

A coin is tossed twice. What is the probability of getting at least one tail?

• 1/2

• 1/4

• 3/4

• 1

A school has a total of 82 teachers and 54 of them are men. What is the probability that a randomly selected teacher from this school is a woman?

• 82/54

• 54/82

• 28/82

• 28/54

If a book is picked at random from a shelf containing 5 novels, 3 books of poems, and a dictionary, what is the probability that dictionary is selected?

• 1/8

• 1/9

If a book is picked at random from a shelf containing 5 novels, 3 books of poems, and a dictionary, what is the probability that a novel is not selected?

• 5/9

• 4/9

A die is rolled. Find the probabilities of Obtaining a 1 or 6?

• 1/6

• 1/6 + 1/6 = 2/6

• 1/6 X 1/6 = 1/36

• 3/6

A bag contains 4 red marbles, 7 white marbles, 5 black marbles and 4 blue marbles. What is the probability that a marble picked from the bag randomly is either a red or a white marble?

• 4/20

• 7/20

• 11/20