Suppose a regional market analyst believes the median repair cost estimates for Garage 1 is below that for Garage 2 (or the probability distribution of repair cost estimates for Garage 1 is shifted to the left of the probability of repair cost estimates for Garage 2). Use the Wilcoxon Signed Rank Test at the 0.05 level on the observations below to test this claim?

Repair Repair

CostCost

EstimateEstimate

Sample of CarsGarage 1Garage 2

Car 1$710$790

Car 2$900$ 1010

Car 3$ 1100$ 1220

Car 4$890$880

Car 5$990$ 1040

Car 6$910$980

Car 7$ 1030$ 1170