Math 141: Readings for October 29, 2025

Reading

Before coming to lecture today, please read the following material:

• MD 8.3 - 8.5

Homework Assignment

After you’ve completed the reading, but before coming to class, please complete the following homework assignment. Bring your responses to this assignment (handwritten or typed) to class on a piece of paper:

We’d like to estimate the average height of Reedies. Pretend we’ve taken a random sample of 20 Reedies and measured their height. We get a point estimate of 66.5 inches, and, after bootstrapping, a 95% confidence interval of (63.0, 70.0).

• What is our parameter of interest?
• If we were to create an 80% confidence interval would it be wider or narrower than the 95% confidence interval we reported? Explain your answer.
• Interpret the 95% confidence interval in the context of the data.