Hello. Please let me know these questions about True and False. Thank you so muc
ID: 3178079 • Letter: H
Question
Hello. Please let me know these questions about True and False.
Thank you so much!
(Statistics, Simulation with Arena, Crystal ball in Excel)
1. A triangular distribution is recommended as a distribution to represent activity durations when it is not possible to collect activity duration data.
True or False?
2. The algorithm presented for generating observations from a Poisson distribution is an example of an “acceptance–rejection” method.
True or False?
3. When comparing the performance of two alternative systems utilizing discrete event simulation, the recommended statistical method for analyzing the simulation output is the two-sample t-test.
True or False?
4. Crystal Ball software can simulate linear correlation between two random variables.
True or False?
5. The sequence of “random numbers” generated by a random number generator such as an LCG(Linear Congruential Generators) are not random, and can be reproduced.
True or False?
6. When the various goodness of fit tests are applied, the null hypothesis that the observed data are observations from a particular distribution is not rejected if the p-value of the test statistic is very low (e.g., < 0.01).
True or False?
7. The random number generator utilized in Arena is a LCG(Linear Congruential Generators).
True or False?
8. The Chi-square goodness of fit test assumes that the parameters of the distribution being tested are estimated using maximum likelihood estimators.
True or False?
9. The coefficient of variation for a random variable is a measure of the symmetry of the density/mass function of the random variable.
True or False?
10. Validation of a simulation model against historical performance data is one task where the use of empirical distributions is recommended.
True or False?
Explanation / Answer
7,
TRUE
•LCG with: m = 231 – 1 = 2,147,483,647
a = 75 = 16,807
A well-tested generator in an efficient code.
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