Proficient Lab Assignment

Lab 7 Lecture Notes

You will need your Week 5 Lab Data!!

1. Go to Modules in the course room and click on Week 7 Lesson: Hypothesis Testing

2. Click on Week 7 Assignment: Lab

3. Download the Week 6

4. Let’s look at our data from Lab 5!

Data Set: Ten Grades on the Midterm Exam

50	68	74	77	80
86	86	80	78	90

Mean: ________ Our Score: _________

Standard Deviation: _________

5. Find a 95% confidence interval for the true mean Midterm Average of all the people in the class. What is the interval? [Provide a Screenshot].

6. Give a practical interpretation of the 95% confidence interval.

7. Find a 99% confidence interval for the true mean Midterm Average of all the people in the class. What is the interval? [Provide a Screenshot].

8. Give a practical interpretation of the 99% confidence interval. Would the margin of error be larger or smaller for the 99% CI? Explain your reasoning.

Lab 7 Overview