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Author Question: In developing an interval estimate, if the population standard deviation is unknown a. it is ... (Read 131 times)

tichca

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In developing an interval estimate, if the population standard deviation is unknown
 a. it is impossible to develop the interval estimate.
   b. the standard deviation is arrived at using the range.
   c. the sample standard deviation must be used.
   d. it is assumed that the population standard deviation is 1.

Question 2

Gradual shifting or movement of a time series to relatively higher or lower values over a longer period of time is called
 a. seasonality.
  b. a cycle.
 c. indexing.
 d. trend.



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bpool94

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Answer to Question 1

c

Answer to Question 2

d




tichca

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Reply 2 on: Jun 24, 2018
Excellent


kishoreddi

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Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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