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Author Question: In developing an interval estimate, if the population standard deviation is unknown a. it is ... (Read 147 times)

tichca

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

c

Answer to Question 2

d


tichca

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Reply 2 on: Jun 24, 2018
:D TYSM

billybob123

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Reply 3 on: Yesterday
Wow, this really help

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