1/25/2010

Chapter 0

• Review of statistical inference
  • Null hypothesis
  • Alternative hypothesis
  • Hypothesis test
  • Critical region
  • Significance level
  • Type I and Type II errors
  • Null distribution
  • P-value
• Overview of modeling concepts
• One sample inference for a mean
  • The time to repair an electronic instrument is a normally distributed random variable measured in hours. The repair times for 16 such instruments are: 159, 280, 101, 212, 224, 379, 179, 264, 222, 362, 168, 250, 149, 260, 485, and 170. Does it seem reasonable that the true mean repair time is greater than 225 hours? Use 0.05 as your significance level (See smallt.sas and verify the calculations by hand.)
• Statistical inference for a proportion
• Two sample t-test
  • Return to pulse data set from day 1 and compare the resting pulses for men and women.