The map at http://bonap.org/2015_SpecialtyMaps/Density%20Gradient%202015/original/2tax22_Palms.png suggests that Arkansas should be added and Nevada and Maryland removed.
cause we naturally think of the coastline states and get the two non-mainland states out of the way first... sometimes subconsciously. Or at least that's why I did, just in case.
That does it! I'm planting a palm tree in Hoboken first thing tomorrow morning. Please add New Jersey. (I'll let you know as soon as it dies or gets stolen...which should be by the middle of next week)
Scoring
You scored 6/12 = 50%
This beats or equals 6.7% of test takers
The average score is 10
Your high score is 6