RMU STAT2110 - Week 6

Here are some resources that could be useful.

Some class notes:

• Introduction to confidence intervals
• Using the t distribution (confidence intervals and hypothesis tests)

• Critical values for the normal distribution
  • Setup (video)
  • Calculations using StatCrunch (video)
  • Calculations using Excel (video) - works in Excel 2010 and earlier, may not work in Excel 2013
• Confidence interval for a proportion (video)
• t values
  • Setup (video)
  • Calculations using StatCrunch (video)
  • Calculations using Excel (video) - works in Excel 2010 and earlier, may not work in Excel 2013
• Confidence interval for a mean
  • Setup (video)
  • Calculations using StatCrunch (video)
  • Calculations using Excel CONFIDENCE - incorrect answer (video)
  • Calculations using Excel TINV - correct answer (video) - works in Excel 2010 and earlier, may not work in Excel 2013
• Confidence interval for a mean with an outlier
  • Calculations using StatCrunch (video)
  • Calculations using Excel (video) - works in Excel 2010 and earlier, may not work in Excel 2013
  • A different solution using Excel (text, a different set of data) and Excel spreadsheet for this solution

• A confidence interval dictionary
  • Part 1
  • Part 2
• Calculating critical values
  • Using Excel (normal and t)
  • Using tables (from StatSoft)
  • Using OpenOffice Calc (a free alternative to Excel) Part 1
  • Using OpenOffice Calc (a free alternative to Excel) Part 2

From Khan Academy (each section has multiple lecture videos and practice exercises)

• Probability and Statistics
  • Confidence Intervals

From Campusmath.com (each section has multiple videos)

• High School - Statistics
  • Confidence Interval and Sample Size