Posted by **Melvin** on Monday, October 31, 2011 at 1:55pm.

This is my first stats class and I don't know how to do this, could you please help me? Thank you.

You are asked to determine the typical number of sales of a certain product at the store you work for. A sample of 50 days over the last quarter shows an average of 55 units sold per day with a standard deviation of 10 units.

a. Construct a 95 percent confidence interval around the mean.

b. Construct a 99 percent confidence interval around the mean.

c. Show the two limits on a graph of some sort

d. Interpret your results

## Answer this Question

## Related Questions

- stats - Relatively speaking, which statistics exam did you do better on? On ...
- MATH Albera - Sales at a certain department store follow the model where y is ...
- Statistics - A class survey in a large class for first-year college students ...
- it - Explain how you would create the users for the sales organization unit and ...
- Math - a teacher asked her students to think of a number, multiply by 5, and ...
- math - a teacher asked her students to think of a number, multiply by 5, and ...
- C++ Programming - Design and create a class named Stats that has an array of 12 ...
- math - a teacher asked her students to think of a number, multiply by 5, and ...
- statistics - what is the standard deviation if 12 randomly chosen students were ...
- Math - Statistics show that the sales force of a certain company successfully ...

More Related Questions