Hello, Please I need help with my assignment.

Use linear regression to develop a predictive model for demand for ironing board covers based on sales of irons.

Year Sales of Irons Demand for Covers

1 8000 5000

2 7000 2000

3 100006000

4 6000 4000

(i) Develop the equation.

(ii) If the demand for the cover is 8000 units, forecast the sales amount?

True / False Questions (Answer with explanation):

2. Forecast accuracy tends to increase as the time horizon increases.

3. As a forecasting technique, the Delphi technique is useful for technological forecasting.

Calculation:

4. This time study is related to a job with four tasks. You can see the observations and performance rating for five cycles in the following table. Calculate the standard time for this job assuming an allowance factor of 10% of workday.

Observations (minutes per cycle)

TaskPerformance Rating 1 2 3 4 5

1 85 1.47 1.51 1.54 1.49 1.52

2 100 0.84 0.85 0.83 0.890.80

3 110 0.45 0.50 0.46 0.43 0.51

4 90 1.09 1.13 1.25 1.10 1.17

True / False Questions (Answer with explanation):

5. Job enlargement involves an increase in the level of employee responsibility for planning and coordinating tasks.

6. "Self-directed teams" are allowed to make changes in the work processes under their control.