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1.  A 95% confidence interval estimate for proportion of Americans who think Abraham Lincoln is United States' most outstanding President is 65% to 75%. If the more precise estimate is requested, then confidence level

  1. Increases
  2. Remains the same
  3. Decreases
  4. None of the above

 2.  The width of the confidence interval estimate of mean (µ, like average credit card debt for American college students) narrows when the

  1. Level of confidence raises
  2. Sample size raises
  3. Sample size reduces
  4. All of the above

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923245

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