新用戶掃碼下載
掃碼下載APP
及時接收最新考試資訊及
備考信息
"quantity"exercise:Total probability rule
學習是一個不斷積累的過程，每天學習一點，每天進步一點！為了幫助大家更高效地備考2021年CFA考試，正保會計網校每日為大家上新CFA習題供大家練習。讓網校與您一起高效備考2021年CFA考試，夢想成真！
Questions 1:
An analysis of US share prices determines that there is consistent underpricing by $0.02 with a p-value of 0.0012. Assuming an average transaction cost of $0.05, which statement is most accurate? The underpricing result is:
A、statistically significant and indicates a possible arbitrage opportunity.
B 、not economically meaningful.
C 、not statistically significant.
Questions 2:
The total probability rule is used when an analyst is interested in:
A、 all potential outcomes.
B 、a set of events.
C 、a single outcome.
View answer resolution
【Answer to question 1】B
【analysis】
B is correct. The underpricing result is not economically meaningful when the average transaction cost is taken into consideration.
A is incorrect. As explained in C, the result is statistically significant. However, there is no arbitrage opportunity in this case because the transaction cost is too high (i.e., not economically meaningful).
C is incorrect. The result should be statistically significant as a p-value of 0.0012 is the smallest level of significance that the null hypothesis is rejected. In this case, it is far less than level of significance of 0.01.
【Answer to question 1】A
【analysis】
A is correct. When the scenarios (conditioning events) are mutually exclusive and exhaustive, no possible outcomes are left out, thereby covering all potential outcomes.
B is incorrect because a set of events does not necessarily cover all possible events and would be calculated using the multiplication rule
C is incorrect because a single outcome is an independent event
成功=時間+方法，自制力是這個等式的保障。世上無天才，高手都是來自刻苦的練習。而人們經常只看到“牛人”閃耀的成績，其成績背后無比寂寞的勤奮。小編相信，每天都在勤奮練習，即使是一點點的進步，大家一定可以成為人人稱贊的“牛人”。更多CFA考試資訊，點擊了解>
學員討論（0）
推薦閱讀
新用戶掃碼下載
京公網安備 11010802044457號
