Answer the following.

Question no.1:

Which of the following choices is a continuous random variable?

A. the lifetime in hours of 20 flashlights

B. the weight of Grade 5 pupils

C. the number of tourists each day in museum

D. the number of books in the library

Question no. 2:

Which of the following choices is a discrete random variable?

A. The average weight of male athletes

B. The number of patients in a hospital

C. The amount of paint used in repainting a building

D. The average amount of electricity consumed

Question no. 3:

Which of the following is not a true statement?

A. The sum of all the probabilities in a probability distribution is always equal to one.

B. The value of a random variable could be zero.

C. Random variables can only have one value.

D. The probability of the value of a random variable could be zero.

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Given below is a table that gives probability distribution.

X = | 2 | 3 | 6 |

P(X) = | 1/2 | 1/3 | 1/6 |

Question no. 4:

If P(X) = /6, what are the possible values of X for it to be a probability distribution?

A. 1,1,2

B. 1,2,3

C. 0,2,3

D. 2,3,4

Question no. 5:

What formula gives the probability distribution shown by table above?

A. P(X) = 1/6

B. P(X) = 6/

C. P(X) = 1/

D. P(X) = /6