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10. The following table shows the probability distribution of a discrete random variable X. Find the value of n. X 2 4 6 P(X) 0.40 0.15 n A. 0.15 B. 0.25 C. 0.45 D. 0.6 11. Which of the following table represents probability distribution? A. X 0 2 3 C. X 2 3 4 P(X) 0.11 0.15 0.42 0.44 P(X) 0.32 0.28 0.28 0.12 B. X W 7 D. X O P(X) P(X) NI 12. What are the values of P(x) if P(X) = -, for X = 0,1, and 2? A. 0, 0.33, 0.67 B. 0, 0.45, 0.55 C. 0, 1,2 D. 0.2, 0.3, 0.5 13. The given table represents a probability distribution. What is P(2) + P(3)? X 1 3 4 P(X) A . B. C. WIN NIH D. Refer to the given problem in answering number 14 - 15 The daily demand for copies of a magazine at a variety store has the probability distribution as follows. Number of Copies X Probability P(X) 0.10 0.25 2 0.30 3 0.16 4 0.05 5 0.14 14. What is the probability that two or more copies will be demanded on a particular day? A. 0.30 B. 0.35 C. 0.65 D. 0.75 15. What is the probability that the demand will be at least one but not more than four? A. 0.76 B. 0.71 C. 0.51 D. 0.35 3m Directions: Choose the letter of the correct answer. Write your answer on a separate sheet of paper. __1. Which of the following is Ma discrete variable? A. Number of white marbles in the box. B. Number of students present in the classroom. C. The weight of a box of soft drinks labeled '8 ounces.\" D. The number of customers arrived in the restaurants between 7":00 a. m to 5:00 p.m. _2. Which of the following statement describe a continuous random variable? A. Theaverage distance traveled byajeepin aweek. B. The number of students present in a Class Anthurium. C. The number of motorcycles owned by a randomly selected household. D. The number of girls taller than 5 feet in a random sample of 10 girls. _3. Which of the following is a variable whose value is obtained by measuring? A. Continuoua B. Discrete C. Interval D. Nominal 4. You decide to collect a bunch of bottles of soft drink and measure the volume of solt drink in each bottle. Let X be the number of milliliter [ml] of soft drink in each bottle. What type of variable is X? A. X is a constant. B. X is a place holder. C. x is a discrete random variable. D. X is a continuous random variable. _5. Which of the following statements describe a discrete random variable? A. The length of span of a Ill-months baby. B. The average increase in height of a baby each year. C. The average inerease in weight of a baby each year. D. The number of avocados produced by an avocado tree each year. _6. X is the time it takes a chef to cook a specic dish. is a continuous random variable. Why do think the variable X in the statement becomes continuous? The variable X is continuous because it takes... A. a range of values B. takes a countable value. 0. an integral value. D. a specic numerical value 7. If a coin is tossed, what are the possible values of the random variable for the number of heads? A.0.1 13.0.1.2 C. 1.2.3 D.0. 1.2.3 _8. Suppose you tossed two coins. What are the sample spaces for the experiment above? A. HH. '1'!\" C. Hl-l. TH. 'I'T B. HH. HT. TT D. HH. HT. TT. TH 9. lfyou tossed a die. which of the following is Ma possible value of the random variable X representing the number of dots appeared at the top after tossing the die? A. 1 3.7 (3.6 D.3
