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Author Question: The width of a confidence interval estimate of the population mean increases when the: a. level of ... (Read 139 times)

AEWBW

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on: Jun 24, 2018
The width of a confidence interval estimate of the population mean increases when the:
 a. level of confidence increases
  b. sample size decreases
  c. value of the population standard deviation increases
  d. All of these choices are true.

Question 2

To test the validity of a multiple regression model, we test the null hypothesis that the regression coefficients are all zero by applying the:
 a. F-test c. z-test
  b. t-test d. None of these choices.


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kescobar@64

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

D

Answer to Question 2

A


AEWBW

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Reply 2 on: Jun 24, 2018
Gracias!

isabelt_18

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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