An electronics retailer is interested in studying the incomes of ...

[joe]

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.

[mcarey591]

Answer to Question 1

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

Answer to Question 2

C

[joe]

YES! Correct, THANKS for helping me on my review

[CAPTAINAMERICA]

Thanks for the timely response, appreciate it