A large department store has collected the following monthly data on lost sales revenue due to theft and the number of security guard hours on duty:

Lost Sales Revenues	Total Security Guard Hours
$1,000	600
$1,400	630
$1,900	1,000
$2,000	1,200
$1,800	950
$2,100	1,300
$2,300	1,350

Determine the least squares regression equation for predicting lost sales revenues based upon total security guard hours, assuming a 95% level of confidence.

Y = 1.902X + 899.545

Y = 1.402X+ 377.988

Y = 0.902X- 143.569

Y = 0.195X + 202.894