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Author Question: When the correlation between X and Y is zero, then the safest prediction of Y which can be made, ... (Read 17 times)

Yolanda

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on: Jun 20, 2018
When the correlation between X and Y is zero, then the safest prediction of Y which can be made, give information on X,
 
  a. is the mean of X
  b. is the mean of Y
  c. is the mean of the combined distributions of X and Y
  d. none of these

Question 2

When the null hypothesis is rejected, then we know for certain that
 
  a. the mean of the sample equals the mean of the population
  b. the mean of the sample differs from the mean of the population
  c. the mean of the sample is a biased estimator
  d. none of these, since the statistical decision is a probability statement and not a statement of certainty


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janieazgirl

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Reply #1 on: Jun 20, 2018
Answer to Question 1

b

Answer to Question 2

d


Yolanda

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Reply 2 on: Jun 20, 2018
Great answer, keep it coming :)

cici

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Reply 3 on: Yesterday
Wow, this really help

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