C, because debtors like having narrower debts.
Okay so rewards and penalties make people make better decisions. So like if I don't get questions wrong on a test I receive $5 from my parents, but if I fail a test I'm grounded for a week. So I study more to get money. (this is not actually me just making an example). Rewards make people want to do better, and so do penalties. I don't want to do bad and get punished for it.
According to the scale, an average person would posses the mean of 100 IQ <span>and standard deviation of 15. If to be a member of mensa one should have </span><span>an iq at least 2.5 standard deviations above average, the minimum iq should be:
</span>
2.5 = (x-100)/15
x = 137.5 >>>>> Less than 1% population belong to this IQ group or higher.
