11,300 pounds The towing capacities (in pounds) of all the pickup trucks at a dealership have a...

Question:

11,300 pounds
The towing capacities (in pounds) of all the pickup trucks at a dealership have a bell-shaped distribution, with a mean of 11,830 pounds and a standard deviation of 2370 pounds.
(a) Transform the towing capacity to a z-score,
(b) Interpret the results,
(c) Determine whether the towing capacity is unusual.