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Author Question: Find the 90th percentile. What will be an ideal response?[br][br][b][color=#151B54]Question ... (Read 77 times)

biggirl4568

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on: Jun 24, 2018
Find the 90th percentile.
 
  What will be an ideal response?

Question 2

The irregular component of a time series exhibits a tendency to grow or decrease rather steadily over long periods of time.
 
  Indicate whether the statement is true or false


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stillxalice

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

Find x0 such that P(X  x0 ) = 0.90 = P(Z  z0 ).
Since the area to the left of z0 is greater than 0.5, z0 must be larger than zero such that P(0 < Z < z0 ) = 0.40, so z0 = 1.28. Thus, x0 = 75 + (1.28 )(4 ) = 80.12

Answer to Question 2

FALSE


biggirl4568

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Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

meganmoser117

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Reply 3 on: Yesterday
Wow, this really help

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