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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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NERD NERD
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6 years ago
Suppose that the amount of time teenagers spend playing computer games per week is normally distributed with a standard deviation of 1.5 hours. A sample of 100 teenagers is selected at random, and the sample mean computed as 6.5 hours. What happens to the width of a confidence interval in each of the following situations?
 a. Confidence level increases
  b. Confidence level decreases
  c. Sample size increases
  d. Sample size decreases
  e. Population standard deviation increases
  f. Population standard deviation decreases
  g. Sample mean increases
  h. Sample mean decreases
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takirahh_takirahh_
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6 years ago
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NERD Author
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6 years ago
Thanks
einstein
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Yesterday
Smart ... Thanks!
SlimyPencil
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2 hours ago
this is exactly what I needed
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