200 word analysis for The Payment Time Case

200 word analysis for The Payment Time Case

Write a minimum 200-words including the following calculations and using the information to determine whether the new billing system has reduced the mean bill payment time:

  • Using the 95% confidence interval, can we be 95% confident that µ ≤ 19.5 days?
  • Using the 99% confidence interval, can we be 99% confident that µ ≤ 19.5 days? Use the Excel spreadsheet to show your work.

Format your assignment consistent with APA format with at least one (1) peer-reviewed reference

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