Q13   An analyst has recently determined that only 60 percent of all U.S. pension funds have holdings in hedge funds. In evaluating this probability, a random sample of 50 U.S. pension funds is taken. The number of U.S. pension funds in the sample of 50 that have hedge funds in their portfolio would most accurately be described as:

A . a binomial random variable.

B. a Bernoulli random variable

C. a continuous random variable

D. multivariate random variable

答案和详解如下：

Q13.   A  07 Modular Level I, Vol. 1, pp.372-375   Study Sessions 3-9-d

This is a Bernoulli trial because a U.S. pension fund either has investments in hedge funds or it does not; i.e., the experiment must have one of two outcomes. A binomial random variable is defined as the number of successes in Bernoulli trials.

什么呀，看不懂

a

可能是A

thx