Draw Figure 6.19 with two x axes: 90:25 ratio and standard deviations.

On each axis, label the appropriate values for the mean and one, two, and three standard deviations away from the mean.

b. What percentage of respondents estimated the 90:25 ratio to fall between 60 and 90? 45 and 105? 30 and 120? How do you know?

c. The actual 90:25 wealth ratio for American households is