Demand for rug-cleaning machines at Clyde's U-Rent-It is shown in the following table. Machines are rented by the day only. Profit on the rug cleaners is $17 per day. Clyde has 4 of the rug-cleaning machines. Demand 0 3 Frequency 30 20 . 20 . 15 . 10 .05 1.00 4 5 Click here for the Excel Data File a. Assuming that Clyde's stocking decision is optimal, what is the implied range of excess cost per machine? (Enter smaller value in first box and larger value in second box. Do not round intermediate calculations. Round your answers to 2 decimal places.) Implied range of excess cost per machine from to b. Your answer from part a has been presented to Clyde, who protests that the amount is too low. Does this suggest an increase or a decrease in the number of rug machines he stocks? O Increase O Decrease c. Suppose now that the $17 mentioned as profit is instead the excess cost per day for each machine and that the shortage cost is unknown. Assuming that the optimal number of machines is 4, what is the implied range of shortage cost per machine? (Enter smaller value in first box and larger value in second box. Do not round intermediate calculations. Round your answers to 2 decimal places.) Implied range of shortage cost per machine from to