1. A variable where the information or data acne take infinitely many values is A. Continuous variable C. Quantitative D. Qualitative variable B. Discrete Variable 2. Which of the following statements describe a continuous random variable? A. The number of girls taller than 5 feet in a random sample of 10 girls B. The number of students present in a Class Temperance C. The number of motorcycle owned by randomly selected household D. The average distance travelled by a tricycle in a month 3. A set of numerical values assigned to a sample space is called A. Random experiment B. random sample 4. Which of the following is an example of a discrete random variable? A. welght of a new born baby B. body temperature of COVID-19 patients C. number of heads that will out if you toss a coin twice D. height of volleyball players 5. Shiela decided to conduct survey of families with four children. She is interested in counting the number of boy in each family. Is this a random variable? A. Yes, it is a random variable. . ybe 6. A box has red marbles, 3 black marbles and 5 blue marbles. A marble is picked at random. what is the total number of possible outcomes? C. Random variable D. None of the above C. No, it I not a random variable D. Cannot be determined A. 2 . C. 5 D. 10 7. Cardo decided to order a pizza but he needs to choose the type of crust and the toppings. If there are only 6 possible combinations of ordering a pizza, from which of the following should you choose? A. Crust: thin or deep dish; Toppings: cheese, bacon, sausage, pepperoni or hotdog B. Crust: thin or deep dish; Toppings: cheese or pepperoni C. Crust: thin or deep dish; Toppings: cheese, bacon or pepperoni D. Crust: thin or deep dish; Toppings: cheese, bacon, sausage or pepperoni 8. How would you interpret a very small variance or standard deviation? A. The values of the random variables are equal to the mean. B. The values of the random variable are farther from the mean. C. The values of the random variable are closer to the mean. D. The values of the random variables have no relationship with the mean. For numbers 10-12, Suppose you tossed two falr colns, 9. What are the sample spaces for the experiment above? . , C. TT, HH, HT D. TT, HH, HT, TH B. TT, HH, TH 10. How many possible outcomes will occur from the experiment above? A. 2 B. 4, C. 6 D. 8 11. What are the possible values of the random variable for the number of heads? A. 0 12. What must be the value of the probability of each random variable? A. P(X) 20 B. OS P(X) s1 13. What is the sum of the probabilities of all values of the random variable? A EP(X) =0 B. EP(X) = 1/10 14. If two socks drawn consecutively without replacement from a drawer containing 4 red socks and 5 green socks. If the value of the random variable X represents the number of green socks, what is the probablity of getting two green soclor? A. 1/2 B. 1/3 15. A bax contalns five green balls, three black balls and seven red balls. Two balls are selected at nandom without replacement from the box. What is the probability that both balls are the same color? A. 0.3238 B. 0,1 . 1,2 D. 0,1, 2 C. -1 S P(X) Si D. P(X) s1 C. EP(X) = 1 D. EP(X) = 10 C. 1/4 D. 1/8 C. 0.3212 D. 0.3289 B. 0.3264 16. An urn contains 3 red marbles, 2 white marbles and 1 yellow marble. Three balls are selected color is not drawn? A. 5/10 B. 7/10 random without replacement from the urn. What is the probability that at least 1 C. 9/10 D. 1/10