the town managers, looking at the modeling sample, thinks that the day with a sales percentage of 32 and availability of 10 is an outlier, and asks us to remove it from the measurements.

badge sales percentage : (54, 90,74, 21, 15, 77, 32, 53, 62, 14, 19, 75, 71, 32, 28)

parking availability: (76, 13, 30, 81, 77, 45, 10, 54, 60, 43, 92, 0, 55, 40, 88)

a) rebuild the parking availability model to follow the managers' suggestion.

b) should we use the revised model in place of the original? why or why not?