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Author Question: An electronics retailer is interested in studying the incomes of consumers in a particular area. The ... (Read 92 times)

joe

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on: Jun 24, 2018
An electronics retailer is interested in studying the incomes of consumers in a particular area. The population standard deviation is known to be 1,000 . What sample size would the researcher need to use for a 95 confidence interval if the difference between UCL and LCL should not be more than 100?

Question 2

If the Durbin-Watson statistic has a value close to 0, which assumption is violated?
 a. Homoscedasticity.
  b. Normality of the errors.
  c. Independence of errors.
  d. None of these choices.


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mcarey591

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

n = 1, 537 (Note that B equals 50 here, which is half of 100.)

Answer to Question 2

C


joe

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Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

tanna.moeller

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Reply 3 on: Yesterday
Gracias!

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