A population score has population mean =100 and deviation =10 what is the z score

Answer 1

100 has z=0

110 has z= 1

120 has z= 2

130 has z= 3

90 has z =-1

80 has z= -2

70 has z=-3

70 or less, and you have a good legal argument that you're incompetent to stand trial or be executed if it got that far. Or a good legal argument for a not guilty verdict due to insanity.

Or, a good legal argument to remove the president for incapacitation, if his IQ test shows less than 70, which may be hard to beat even with fudging the numbers without detection.