Review Problems

Introductions

Introduce yourselves!

Icebreaker: What are you doing this weekend?

Groupwork

1. If a particular set of data is normally distributed, 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. 19 of every 20 observations would fall within 2 standard deviations of the mean.

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

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

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_07EQhqb2H3xojps

Make sure to include the names of all group members.

Happy reviewing!

-- Mark