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Author Question: The _____ denotes the number of standard deviations xi is from the mean . a. variance b. median ... (Read 22 times)

stock

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on: Jun 24, 2018
The _____ denotes the number of standard deviations xi is from the mean .
 a. variance
  b. median
  c. z-score
  d. normal deviation

Question 2

In order to estimate the average time spent per student on the computer terminals at a local university, data were collected for a sample of 81 business students over a one-week period. Assume the population standard deviation is 1.8 hours. With a .95 probability, the margin of error is approximately
 a. .39.
   b. 1.96.
   c. .20.
   d. 1.64.


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katieost

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

c

Answer to Question 2

a


stock

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Reply #2 on: Jun 24, 2018
Thank you


katieost

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Reply #3 on: Jun 24, 2018
No problemo


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