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Author Question: A sample of 200 elements from a population with a known standard deviation is selected. For an ... (Read 142 times)

RODY.ELKHALIL

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on: Jun 24, 2018
A sample of 200 elements from a population with a known standard deviation is selected. For an interval estimation of , the proper distribution to use is the
 a. normal distribution.
   b. t distribution with 200 degrees of freedom.
   c. t distribution with 201 degrees of freedom.
   d. t distribution with 199 degrees of freedom.

Question 2

Which of the following forecasting methods puts the least weight on the most recent time series value?
 a. exponential smoothing with  = .3
 b. exponential smoothing with  = .2
 c. moving average using the most recent 4 periods
  d. moving average using the most recent 3 periods


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poopface

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

a

Answer to Question 2

b


RODY.ELKHALIL

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Reply 2 on: Jun 24, 2018
Gracias!

laurnthompson

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Reply 3 on: Yesterday
:D TYSM

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