Month	Units produced	Manuf. Overhead
1	500	131,000
2	600	135,000
3	400	104,000
4	300	76,000
5	800	186,000
6	900	190,100
7	600	150,000
8	400	98,000
9	300	78,000
10	200	60,000
11	400	108,000
12	600	152,000
13	700	158,000
14	500	134,380
15	300	86,000
16	200	60,000

Given the following information, use Excels Regression tool and scatter plot tool to:

1. What is the estimated overhead if 1,000 units are produced?
2. What is the 95% prediction interval for the true overhead when the number of units produced is 1,000?
3. What is the residual for the fifth observation (round to two decimal places)?

(Note: To use the Regression tool, you need to install the add-in Analysis Toolpak. Click file>click options>click add-ins>highlight Analysis Toolpak>click go>in the box that opens, check Analysis Toolpak>click ok. To access the Regression tool, click Data tab>click Data analysis>highlight Regression>click ok. For Apple computers, click on tools first and then click on add-ins.)