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Author Question: If the average arrival rate increases to 14, what is the probability that the system is empty? A) ... (Read 104 times)

altibaby

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on: Jun 24, 2018
If the average arrival rate increases to 14, what is the probability that the system is empty?
 
  A) 0.034
  B) 0.34
  C) 0.057
  D) 0.57

Question 2

What is quota sampling? States its advantages and disadvantages.
 
  What will be an ideal response?


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macybarnes

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Reply #1 on: Jun 24, 2018
Answer to Question 1

A

Answer to Question 2

Quota sampling is a nonprobabilistic sampling method, commonly used by polling organizations. Interviewers are assigned to a particular locale and instructed to contact specified numbers of people of certain age, race, and gender characteristics. These assigned quotas represent what are thought to be appropriate proportions for the population at large. However, once the quotas are determined, interviewers are granted flexibility in the choice of sample members. Their choice is typically not random. Quota sampling can, and often does, produce quite accurate estimates of population parameters. The drawback is that, since the sample is not chosen using probabilistic methods, there is no valid way of determining the reliability of the resulting estimates.


altibaby

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Reply #2 on: Jun 24, 2018
Correct answers!


macybarnes

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Reply #3 on: Jun 24, 2018
Great! Please up vote :D


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