Hi everyone! Read through the material below, watch the videos, work on the Excel lecture and follow up with your instructor if you have questions.


Learning Outcomes.

  • Create probability distributions, as well as identify bell shaped distributions (chi-square).
  • Assign probabilities to events using the chi square distribution.

Topic. This lesson covers: Distribution of the Sample Variance of a Normal Population

WeBWorK. Set 11.1



Chi Square Distribution
Chi Square Distribution in Excel

Exit Ticket

You randomly select and weigh 30 samples of an allergy medicine. The sample standard deviation is 1.20 milligrams. Assuming the weights are normally distributed, construct 99% confidence intervals for the population variance and standard deviation.