There is a new working class with money to burn according to the USA Today article titled “New

‘gold-collar’ young workers gain clout” (March 1, 2005). “Gold-collar” is a subset of blue-collar workers defined by researchers as those working in fast-food and retail jobs or as security guards, office workers, or hairdressers. These 18- to 25-yearold

“gold-collar” workers are spending an average of $729 a month on themselves (versus $267 for college students and $609 for blue-collar workers).

Assuming this spending is normally distributed with a standard deviation of $92.00, what percentage of gold-collar workers spend:

a. Between $600 and $900 a month on themselves

b. Between $400 and $1000 a month on themselves

c. More than $1050 a month on themselves

d. Less than $500 a month on themselves