... Amazona Question 12 4 pts Switzerland has a mean household income of $39000 with a standard deviation of $16000. Assume that the distribution is bell shaped and symmetric. If we define a "poor" household as one whose after-tax income is at least 1.3 standard deviations below the mean, what is the household income of a poor family in Switzerland? or less What percentage of families earned an after tax income of 7000 or less? % of families