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Author Question: A study is under way to determine the average height of all 29,000 adult pine trees in a certain ... (Read 269 times)

Ebrown

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on: Jun 24, 2018
A study is under way to determine the average height of all 29,000 adult pine trees in a certain national forest. The heights of 600 randomly selected adult pine trees are measured and analyzed. The parameter in the study is:
 a. the average height of the 600 randomly selected adult pine trees.
  b. the average height of all the adult pine trees in this forest.
  c. all the adult pine trees in this forest.
  d. the 600 adult pine trees selected at random from this forest.

Question 2

Compared to the confidence interval estimate for a particular value of y (in a linear regression model), the interval estimate for an average value of y will be _____.
 a. narrower
  b. wider
  c. the same
  d. Not enough information is given.


Mochi

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

B

Answer to Question 2

a


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Ebrown

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Reply #2 on: Jun 24, 2018
Correct answers!


Mochi

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Reply #3 on: Jun 24, 2018
Great! Please up vote :D


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