Day 15: Statistics for Business Applications

Last Time: Start of Hypothesis Testing
- Hypothesis testing handout
- Example from the 212 website
Today: More Hypothesis Testing
- Collect homeworks for chapter 10
- Hypothesis intuition sheet
- Sections 11.1-11.3
  - Example from the 212 website
    - Note their use of the "n=30 rule" to decide whether normality is appropriate or not.
    - Note their use of the phrase "Accept H_a" - I prefer to avoid the use of the word "accept" entirely! In general we simply reject H₀ in favor of H_a, or fail to reject H₀. It's hard to resist using "accept", however!
  - Examples:
    - #11.46 (one-tailed test)
    - #11.54 (two-tailed test)
Next time: Begin t-distribution (Section 12.1, 12.2, w/ Minitab)

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