1. A contractors records during the least five weeks indicate the number of job requests:

Week 1 2 3 4 5

Request 44 42 53 44 68

Predict the number of requests for week 4, week 5, week 6 using each of the following methods:

1) Nave approach

2) 3 period moving average

3) 4-period moving average

4) Weighted moving average using 0.60, 0.30 and 0.10 assuming highest weight to the most recent week

5) Exponential smoothing with = 0.30; use 40 for week 2 forecast.

2. Paul is conducting an experiment to relate fuel economy (MPG) with the amount of CO2 (grams/mile). Paul conducted an experiment on 12 different vehicle owners. Table below presents the fuel economy and CO2 emitted.

Fuel economy Vs. CO₂ emissions.

Fuel Economy (MPG)	CO2 emissions(g/mi)
29.2	314 Question 1: This question is worth 10 points
26.5	324
28.5	322
28.1	318
28	316
24.1	344
26.1	342
25	356
23.4	381
22.8	389
22.2	399

1) Obtain a linear regression equation line for the data

2) Predict the CO₂ emissions when the fuel economy is 24 MPG