爱考云 - 搜题找答案神器_海量试题解析在线查

题目 A two-sided but very thick coin is expected to land on its edge twice out of every 100 flips. And the probability of face up (heads) and the probability of face down (tails) are equal. When [...]

题目 Assume today's stock price S(0) is $100, the daily log (continuously compounded) return has mean of 0.0 and standard deviation of 0.10 (10%), and tomorrow's stock price is lognormally [...]

题目 What can be said about a distribution that has fatter tails than a normal distribution (given the same variance)? 选项 A.It has a positive kurtosis. B.It has a negative kurtosis. C.It has a [...]

题目 The correlation coefficient for two dependent random variables is equal to: 选项 A.the product of the standard deviations for the two random variables divided by the covariance. B.the [...]

题目 Which of the following are characteristics of a normal distribution? I.Skewness equals to zero. II.Mean less than median. III.Kurtosis greater than zero. IV.Continuous and unbounded. 选项 [...]

题目 Using standard Monte Carlo methods, an analyst prices a European call options using 1,000 simulations of underlying stock price. The option price is estimated at USD 1.00 with a standard error [...]

题目 In regard to the chi-squared and F-distribution, each of the following is true EXCEPT which is false? 选项 A.Both the chi-squared and F-distribution are non-negative and positively skewed to [...]

题目 The following probability matrix gives the joint probabilities (the inner square represents joint probabilities) of variable X which can assume one of three values {1, 2, 3} and variable Y [...]

题目 What is the limit of the CDF as x tends to infinity? 选项 A.Less than 1.0 B.Equal to 1.0 C.Greater than 1.0 D.Depends on the degrees of freedom 答案 B 解析 It is part of the definition [...]

题目 Which distribution is discrete? 选项 A.Bernoulli B.Binomial C.Poisson D.All of the above 答案 D 解析 Bernoulli, binomial and Poisson are each a discrete [...]