- Last Time: Chapter 10 - Confidence
Intervals problems
-
- Reminder:
- Test 2 has been moved back one class period, to the 25th of March.
- section 10.4 - Computing sample size from a desired interval
- Today: Hypothesis Testing
- Return section 9.3 problems:
9.36 and 9.37
- We don't conclude that a claim is true; only that
we can't (or won't) reject it.
- When the proportion differs from the expectation, we get
suspicious; the larger the sample size for a given
difference, the more suspicious we become! (Many of you
seemed to have it backwards.)
- Homework:
- from chapter 10, sections 1-3, due next time
- from chapter 10, section 4, due next Thursday, 3/4
- hint: Using Minitab to create confidence intervals
- Sections 11.1-11.3
- Hypothesis testing handout
- 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 Ha" - I prefer to
avoid the use of the word "accept" entirely! In general we simply reject
things.
- Examples:
- 11.46,
p. 340 (one-tailed)
- 11.54,
p. 341 (two-tailed)
- Next time: Wrap up Test of Hypothesis
Website maintained by Andy Long.
Comments appreciated.