HS 167 Test Prep

1
HS 167 Test Prep

• Wednesday 5/23/07 945 1200
• Exercise-like problems M/C questions
• 2 hours maximum
• Bring to test
• Clean formula handouts
• z and t tables
• Calculator
• Pencils
• Blue book

2
5 Intro to confidence intervals 6 Intro to
hypothesis testing

• Confidence interval for µ, s known (z procedure)
  and, s not known (t procedure)
• Sample size to estimate µ with margin of error d
• Hypothesis testing steps
• Hypothesis statements
• Test statistic
• P-value
• Significance conclusion
• H0 µ µ0, s known (z procedure) and s not known
  (t procedure)

3
7 Paired samples

• Single-, paired-, independent samples
• Difference variable DELTA
• Confidence interval for µd
• H0 µd 0
• Power of test

4
8 Independent samples

• Explanatory (group) variable
• Response variable
• Group means and standard deviations
• Pooled variance and standard error
• Confidence interval for µ1 - µ2
• H0 µ1 - µ2 0 (t procedure)

5
9 Inference about population proportion p

• Confidence interval for p, plus 4 method
• Test of H0 p p0 (z procedure)
• Sample size to estimate p with margin of error d

6
9B Comparing two proportions

• Risk difference (point estimate)
• 95 confidence interval for risk difference (plus
  4 method)
• H0 p1 - p2 0 (z procedure)