8002 무료 덤프문제 온라인 액세스

Let N(.) denote the cumulative distribution function of the standard normal probability distribution, and N' its derivative. Which of the following is false?

• A.N(0) = 0.5
• B.N'(0) 0
• C.N(x) 0 as x
• D.N'(x) 0 as x

On average, one trade fails every 10 days. What is the probability that no trade will fail tomorrow?

• A.0.100
• B.0.905
• C.0.95
• D.0.095

A linear regression gives the following output:
Figures in square brackets are estimated standard errors of the coefficient estimates.
What is the value of the test statistic for the hypothesis that the coefficient of is less than 1?

• A.0.96
• B.1.92
• C.0.64
• D.0.32

If a random variable X has a normal distribution with mean zero and variance 4, approximately what proportion of realizations of X should lie between -4 and +4?

• A.90%
• B.66.60%
• C.95%
• D.99%

What can be said about observations of random variables that are i.i.d. a normally distributed?

• A.The estimated mean divided by the estimated variance has a t-distribution
• B.The estimated mean divided by the estimated variance has a Chi2-distribution
• C.The estimated mean divided by the estimated standard deviation has a t-distribution
• D.The estimated mean divided by the estimated standard deviation has a Chi2-distribution