Question 1

A set of numerical values assigned to a sample space is called.

Accepted Answer

Random variable

Answer

Random sample

Answer

Random experiment

Answer

Random process

Question 2

Which of the following is a true statement?

Accepted Answer

The value of a random variable could not be zero.

Answer

The variable is a known value

Answer

The probability of all the values of a random variable could be zero.

Answer

Random variables can only have one value.

Question 3

If a coin is tossed, what are the possible values of the random variable for the number of tails?

Accepted Answer

0&#44;1

Answer

1&#44; 2&#44; 3

Answer

0&#44; 1 &#44; 2

Answer

0&#44;1&#44;2&#44; 3

Question 4

Suppose you tossed three coins. What are the sample spaces for the experiment?

Accepted Answer

TTT, TTH, THT, HTT, HHT, HTH, THH, HHH

Answer

TTT, HHH, HHT, THT, HTH

Answer

TTT, HHH, TTH, THT, HTH

Answer

HHH&#44; TTT

Question 5

Suppose you tossed three coins. How many possible outcomes will occur from the experiment?

Accepted Answer

8

Answer

4

Answer

2

Answer

6

Question 6

Suppose you tossed three coins. What are the possible values of the random variable for the number of heads?

Accepted Answer

0&#44; 1&#44; 2&#44; 3

Answer

0&#44; 1&#44; 2

Answer

1&#44; 2&#44; 3

Answer

0&#44; 1

Question 7

Suppose you tossed three coins. What are the possible values of the random variable for the number of tails?

Accepted Answer

0&#44; 1&#44; 2&#44; 3

Answer

0&#44; 1&#44; 2

Answer

1&#44; 2&#44; 3

Answer

0&#44; 1

Question 8

Suppose you tossed three coins. Which of the following is NOT a possible value of the random variable for several heads?

Accepted Answer

4

Answer

1

Answer

2

Answer

3

Question 9

Suppose you tossed three coins. Which of the following is NOT a possible value of the random variable for several tails?

Accepted Answer

4

Answer

1

Answer

3

Answer

2

Question 10

Suppose two laptops are tested.D represents defective and N is non-defective. Give the possible sample spaces

Accepted Answer

DD, DN, NN, ND

Answer

DD&#44; DN&#44; NN

Answer

DD&#44; ND&#44; NN

Answer

DD&#44; NN

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