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Author Question: The ________ change every time a new sample is taken. a.variables b.population parameters ... (Read 261 times)

OSWALD

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on: Jul 24, 2018

  The ________ change every time a new sample is taken.
 

  a.variables
  b.population parameters
  c.sample statistics
 

d.distributions
 
 



Question 2


  Suppose the income of recent doctoral graduates who become professors at a university is approximately normally distributed with a mean income of 42,000 and a standard deviation of 8000. If a random sample of size 100 is taken and the mean is calculated, what is the probability that this mean value will be between 43,500 and 45,000?
 

  a.0.072
  b.0.969
  c.0.0309
 

d.0.9999
 
 



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diesoon

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

correct: c

Answer to Question 2

correct: c


OSWALD

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Reply #2 on: Jul 24, 2018
TY


diesoon

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Reply #3 on: Jul 24, 2018
You're welcome


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