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Author Question: It makes a difference whether or not we know the population variance because a. we cannot deal ... (Read 55 times)

storky111

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on: Jun 20, 2018
It makes a difference whether or not we know the population variance because
 
  a. we cannot deal with situations in which the population variance is not known.
  b. we have to call the result t if the population variance is used.
  c. we have to call the result z if the population variance is not used.
  d. we have to call the result t if the sample variance is used.

Question 2

If the population from which we draw samples is rectangular, then the sampling distribution of the mean will be
 
  a. rectangular.
  b. normal.
  c. bimodal.
  d. more normal than the population.


trog

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

D

Answer to Question 2

D


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storky111

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Reply #2 on: Jun 20, 2018
Thank you!


trog

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Reply #3 on: Jun 20, 2018
Happy to help


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