Statistics MCQs – Basic probability Part 8
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141. According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over R150,000 is 80%. Of the households surveyed, 50% had incomes over R150,000 and 70% had two cars. What is the probability that the residents of a household do not own two cars but do have an annual household income of over R150,000?
a. 0.12
b. 0.10
c. 0.24
d. 0.13
e. 0.06
Answer: B
142. According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over R150,000 is 60%. Of the households surveyed, 60% had incomes over R150,000 and 70% had two cars. What is the probability that the residents of a household do not own two cars but do have an annual household income of over R150,000?
a. 0.12
b. 0.10
c. 0.24
d. 0.13
e. 0.06
Answer: C
143. According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over R150,000 is 80%. Of the households surveyed, 65% had incomes over R150,000 and 70% had two cars. What is the probability that the residents of a household do not own two cars but do have an annual household income of over R150,000?
a. 0.12
b. 0.10
c. 0.24
d. 0.13
e. 0.06
Answer: D
144. According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over R150,000 is 90%. Of the households surveyed, 60% had incomes over R150,000 and 70% had two cars. What is the probability that the residents of a household do not own two cars but do have an annual household income of over R150,000?
a. 0.12
b. 0.10
c. 0.24
d. 0.13
e. 0.06
Answer: E
145. According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over R150,000 is 80%. Of the households surveyed, 60% had incomes over R150,000 and 70% had two cars. What is the probability that the annual household income is over R150,000 if the residents of a household own two cars?
a. 0.69
b. 0.57
c. 0.51
d. 0.74
e. 0.77
Answer: A
146. According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over R150,000 is 80%. Of the households surveyed, 50% had incomes over R150,000 and 70% had two cars. What is the probability that the annual household income is over R150,000 if the residents of a household own two cars?
a. 0.69
b. 0.57
c. 0.51
d. 0.74
e. 0.77
Answer: B
147. According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over R150,000 is 60%. Of the households surveyed, 60% had incomes over R150,000 and 70% had two cars. What is the probability that the annual household income is over R150,000 if the residents of a household own two cars?
a. 0.69
b. 0.57
c. 0.51
d. 0.74
e. 0.77
Answer: C
148. According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over R150,000 is 80%. Of the households surveyed, 65% had incomes over R150,000 and 70% had two cars. What is the probability that the annual household income is over R150,000 if the residents of a household own two cars?
a. 0.69
b. 0.57
c. 0.51
d. 0.74
e. 0.77
Answer: D
149. According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over R150,000 is 90%. Of the households surveyed, 60% had incomes over R150,000 and 70% had two cars. What is the probability that the annual household income is over R150,000 if the residents of a household own two cars?
a. 0.69
b. 0.57
c. 0.51
d. 0.74
e. 0.77
Answer: E
150. You are given the following probability distribution: p(1) = 0.2, p(3) = 0.15, p(5) = 0.6 and p(7) = 0.05. What is P(X > 2)?
a. 0.80
b. 0.70
c. 0.85
d. 0.90
e. 0.95
Answer: A
151. You are given the following probability distribution: p(1) = 0.3, p(3) = 0.15, p(5) = 0.5 and p(7) = 0.05. What is P(X > 2)?
a. 0.80
b. 0.70
c. 0.85
d. 0.90
e. 0.95
Answer: B
152. You are given the following probability distribution: p(1) = 0.15, p(3) = 0.2, p(5) = 0.6 and p(7) = 0.05. What is P(X > 2)?
a. 0.80
b. 0.70
c. 0.85
d. 0.90
e. 0.95
Answer: C
153. You are given the following probability distribution: p(1) = 0.2, p(3) = 0.15, p(5) = 0.55 and p(7) = 0.1. What is P(X > 2)?
a. 0.80
b. 0.70
c. 0.85
d. 0.90
e. 0.95
Answer: A
154. You are given the following probability distribution: p(1) = 0.05, p(3) = 0.3, p(5) = 0.6 and p(7) = 0.05. What is P(X > 2)?
a. 0.80
b. 0.70
c. 0.85
d. 0.90
e. 0.95
Answer: E
155. You are given the following probability distribution: p(1) = 0.2, p(3) = 0.15, p(5) = 0.6 and p(7) = 0.05. What is P(X ≤ 3)?
a. 0.35
b. 0.45
c. 0.38
d. 0.42
e. 0.47
Answer: A
156. You are given the following probability distribution: p(1) = 0.3, p(3) = 0.15, p(5) = 0.5 and p(7) = 0.05. What is P(X ≤ 3)?
a. 0.35
b. 0.45
c. 0.38
d. 0.42
e. 0.47
Answer: B
157. You are given the following probability distribution: p(1) = 0.15, p(3) = 0.2, p(5) = 0.6 and p(7) = 0.05. What is P(X ≤ 3)?
a. 0.35
b. 0.45
c. 0.38
d. 0.42
e. 0.47
Answer: A
158. You are given the following probability distribution: p(1) = 0.2, p(3) = 0.15, p(5) = 0.55 and p(7) = 0.1. What is P(X ≤ 3)?
a. 0.35
b. 0.45
c. 0.38
d. 0.42
e. 0.47
Answer: A
159. You are given the following probability distribution: p(1) = 0.05, p(3) = 0.3, p(5) = 0.6 and p(7) = 0.05. What is P(X ≤ 3)?
a. 0.35
b. 0.45
c. 0.38
d. 0.42
e. 0.47
Answer: A
160. You are given the following probability distribution: p(-2) = 0.2, p(0) = 0.15, p(2) = 0.6 and p(4) = 0.05. What is P(X > 2)?
a. 0.05
b. 0.10
c. 0.04
d. 0.15
e. 0.20
Answer: A