On the day before the 2016 Presidential election, the mean of 3 polls of 100 Wisconsin voters found Hillary Clinton ahead of Donald Trump by a margin of 5.6 percentage points. On Election Day, Trump actually won Wisconsin by a margin of 0.8 percentage points. Can you give possible reasons for this discrepancy? At least one reason should use a statistical formula or principle. c) What are 3 ways to show that the data for the estimate of a mean is approximately normally distributed? d) What condition(s) allow for a binomial distribution to be approximated by a normal distribution?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
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On the day before the 2016 Presidential election, the mean of 3 polls of 100 Wisconsin voters found Hillary Clinton ahead of Donald Trump by a margin of 5.6 percentage points.  On Election Day, Trump actually won Wisconsin by a margin of 0.8 percentage points.  Can you give possible reasons for this discrepancy?  At least one reason should use a statistical formula or principle.

 

 

 

 

 

 

 

 

  1. c) What are 3 ways to show that the data for the estimate of a mean is approximately normally distributed?

 

 

 

 

 

 

 

 

 

  1. d) What condition(s) allow for a binomial distribution to be approximated by a normal distribution?
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