Review Problems

Introductions

Introduce yourselves!

Icebreaker: What did you do on Patriot's day?

Groupwork

1. For any set of data, you would find that approximately (check all that apply):

   1. 2 of every 3 observations would fall within 1 standard deviation of the mean.

   2. The more observations you took, the lower the standard deviation would be.

   3. With enough observations, for repeated experiments, 2 out of every 3 sample means would fall within 2 standard deviations of the mean.

   4. The standard error would be smaller for 3 observations than it would be for 20 observations.

2. What is a confidence interval? Give an example.

3. What is the size of confidence interval based on?

Hand-in

Have ONE person from each group submit the group's answers:

https://wpi.qualtrics.com/jfe/form/SV_0d0NW6rNKd3lchg

Make sure to include the names of all group members.

Happy reviewing!

-- Mark