1.The manufacturer of exercise equipment is interested in understanding of the relationship between the price and the number of purchases made by customers. Based on the following data:

a)What linear regression equation best predicts the sales based on the price? (10 marks)

b)Estimate the sales when price is $1200? (5 marks)

Month

Price ($)

Sales

1

800

36,375

2

1400

38,000

3

2000

41,750

4

2100

42,360

5

2,350

55,080