Choose the letter of the best answer. Write the chosen letter on a one half sheet of paper.(L
1. Which of the following random variables is discrete?
a. Number of movies made by a director c. Time needed to finish a movie
b. Length of film used in a movie
d. Land area of a movie studio
2. If two dice are rolled, which of the following is not a possible outcome of the
random variable X: total number of dots facing up?
b. 3
d. 13
a. 2
C. 10
3. Find the correct value of Y to make a valid probability distribution.
Х 1 2 3 4 5
P(X) 0.11 0.15 0.35 Y 0.24
b. 0.15
C. 0.35
d. 0.24
4. Which of the following is NOT a valid probability distribution?
a. Х 1 2 3 4 5
a. 0.11​