Name: ID: A Exhibit 4-2 Suppose that we have a sample space Exhibit 3-4 Five obs

Question

Name: ID: A Exhibit 4-2 Suppose that we have a sample space Exhibit 3-4 Five observations taken for two variables follow E, denote the sample points. The following probability assignements apply: PE,)-0.25 PCE.)-0.2NE,)-0.1. RE.)-0.15, P(E,)-0.15, PE)0.1, PE,)-0.05. Let 16 50 50 30 50 40 We know that &y44; 10. Refer to Exhibit 4-2, what is the probability of PCA (R) a. 0.05 b. 0.1 c. 0.25 d. 0.15 15. Refer to Exhibit 3-4, compute the sample covariance b. 20 C -27.5 d. -40 When the assumption of equally likely outcomes is used to assign probability values, the method used to assign probabilities is referred to as the a probability method b. subjective method c. classical method d. relative frequency method 11. 16. Refer to Exhibit 4-2, what is the probability of PAUB) a. 0.75 b. 0.5 c. 0.6 d. 0.65 12. A lottery is conducted using three urns. Each urn17. An experiment consists of throwing two six-sided dice and observing the number of spots on the upper faces. Determine the probability that the sum of the spots is 6 contains chips numbered from 1 to 9. One chip is selected at random from each un. The total number of sample points in the sample space is a. b. 100 c. 729 d. 1,000 30 b. 5/36 c. 1/4 13. The correlation coefficient ranges between 18. Negative values of covariance indicate the standard deviation is negative a negative relation between the x and the y -1 and +1 minus infinity and plus infinity 0 and1 1 and 100 a. a. b. b. variables a negative variance of the y values a positive variance of the x values c. c. d. d. 14. The set of al possible sample points (experimental Of five letters (A, B, C, D, and E), two letters are to be selected at random. How many possible selections are there? 19. outcomes) is called a. an event b. the sample space c. a sample d. a population b. 20 10

Explanation / Answer

10. P( A and B ) = P( E3) = .1

11. P( A or B) = P(E1) + P(E2) + P(E3) + P(E6)

= .25 +.2 + .1 + .1

=.65

12. total number of possible ways = 9 *9 *9 = 729 ways

13. Cofficient of correlation lies between -1 to 1

14. Set of all sample events is called sample space.

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.