Regression analysis has produced the following results from the batchproduction costs for each of the past 5 months.

x = 540, y = 755, x2 = 61,000, xy = 83,920

Which of the following is the appropriate value for b in theregression line to 2 decimal places?

a.

1.40

b.

-1.40

c.

0.89

d.

0.01