1. If P(A) = 0.50, P(B) = 0.70, and P(A⋃B) = 0.85, which of the following is true of events A and B?
a. They are independent
b. They are mutually exclusive
c. They are exhaustive
d. None of the above
2. A parameter is a measure that is computed from
a. Population data
b. Sample data
c. Test statistics
d. None of these
3. The statement that "P(A | B) = P(B | A) when A and B are independent" is:
a. Always true
b. Never true
c. Not enough information; we would need to know if A and B are mutually exclusive events
d. Not enough information; we would need to know if A and B are equally likely
1. If P(A) = 0.50, P(B) = 0.70, and P(A⋃B) = 0.85, which of the following...
Consider the following scenario: • Let P(C) = 0.2 • Let P(D) = 0.3 • Let P(C | D) = 0.4 A) FIND P(C AND D)= B)Are C and D mutually exclusive? Why or why not? C and D are mutually exclusive because they have different probabilities. C and D are not mutually exclusive because P(C) + P(D) ≠ 1 There is not enough information to determine if C and D are mutually exclusive. C and D are not mutually...
Assume that we have two events, A and B, that are mutually exclusive. Assume further that we know P(A)= 0.30 and P(B)= 0.40. Assume that we have two events, A and Br that are mutually exclusive. Assume further that we know P(A) 0.30 and PCB 0.40 If an amount is zero, enter "0". a. What is P(An B)? b. what is p(AIB? C. Is AIB) equal to A)? Are events A and B dependent or independent? d. A student in...
3. If PA)-03, P(B) 0.2, P(A and B)-a06, what can be said about events A and B ? A) They are independent. B) They are mutually exclusive. C) They are posterior probabilities. D) None of the above E) All of the above 4. "The probability of event B, given that event A has occurred" is known as a probability A) continuous B) marginal C) simple D) joint E) conditional 5. The expected value of a probability distribution is A. the...
15. If A and B are independent events with P(A) = 0.20 and P(B) =0.50, then P(BA) is: a. 0.20 b. 0.50 c. 0.10 d. 0.70 e. 1.00
Assume that we have two events, A and B, that are mutually exclusive. Assume further that we know P(A) = 0.30 and P(B) =0.40. What is P(A B)? What is P(A | B)? Is P(A | B) equal to P(A)? Are events A and B dependent or independent? A student in statistics argues that the concepts of mutually exclusive events and independent events are really the same, and that if events are mutually exclusive they must be independent. Is this...
11)IfA, B and Care mutually exclusive and exhaustive events andP(A)= P (B)= P(C, find P (A), P (B) and P (C)
31. Assume that we have two events, A and B. that are mutually exclusive. Assume further that we know P(A) 30 and P(B) a. What is P(A n B)? b. What is P(A I B)? c. 40. A student in statistics argues that the concepts of mutually exclusive events and inde- pendent events are really the same, and that if events are mutually exclusive they must be independent. Do you agree with this statement? Use the probability information in this...
There are two events, A and B, where we know that P(A) > 0 and P(B) > 0. If we know these events are mutually exclusive (disjoint), then we can conclude that these events are: A. independant b. dependant c. both independant and dependant d. neither (we cannot know without the values)
Given the following information about events A, B. and C, determine which pairs of events,if any, are independent and which pairs are mutually exclusive. P(A)-0.3 P(BIA) 0.3 P(B)0.5 P(CB) 0.33 P(C) 0.33 P(AIC)-0.33 Select all correct answers. Select all that apply: A and Care mutually exclusive D A and Care independent O Band C are independent 0 Band C are mutually exclusive D Aand B are mutualy exclusive A and B are independ
Question 5 1 pts If A and B are mutually exclusive events, then P(AB) = P(AUB) Not enough information to answer the question O False O True