Que.Chebyshev’s inequality states that the probability of a “Six Sigma” event is less than ___________
|
| a. 10% |
| b. 20% |
| c. 30% |
| d. 3% |
Que.Which of the following random variables are the default model for random samples?
|
| a. iid |
| b. id |
| c. pmd |
| d. all of the mentioned |
Que.Cumulative distribution functions are used to specify the distribution of multivariate random variables.
|
| a. True |
| b. False |
| c. May be True or False |
| d. Can’t say |
Que.Point out the correct statement.
|
| a. The exponent of a normally distributed random variables follows what is called the log-normal distribution |
| b. Sums of normally distributed random variables are again normally distributed even if the variables are dependent |
| c. The square of a standard normal random variable follows what is called chi-squared distribution |
| d. All of the mentioned |
Que.Which of the following is incorrect with respect to use of Poisson distribution?
|
| a. Modeling event/time data |
| b. Modeling bounded count data |
| c. Modeling contingency tables |
| d. All of the mentioned |
Modeling bounded count data
Que.__________ random variables are used to model rates.
|
| a. Empirical |
| b. Binomial |
| c. Poisson |
| d. All of the mentioned |
Que.Point out the wrong statement.
|
| a. The normal distribution is asymmetric and peaked about its mode |
| b. A constant times a normally distributed random variable is also normally distributed |
| c. Sample means of normally distributed random variables are again normally distributed |
| d. None of the mentioned |
The normal distribution is asymmetric and peaked about its mode
Que.Which of the following form the basis for frequency interpretation of probabilities?
|
| a. Asymptotics |
| b. Symptotics |
| c. Asymmetry |
| d. All of the mentioned |
Que.Bernoulli random variables take (only) the values 1 and 0.
|
| a. True |
| b. False |
| c. May be True or False |
| d. Can’t say |
Que.The _________ basically states that the sample mean is consistent.
|
| a. LAN |
| b. LLN |
| c. LWN |
| d. None of the mentioned |