Which of the following is true of student loans?
a. they are usually high interest.
b. they are only available through the government.
c. they may be eligible for cancellation if certain criteria are met.
d. they are often used to pay tuition for private high schools.

The kamp family has twins, rob and rachel. both rob and rachel graduated from college 2 years ago, and each is now earning $50,000 per year. rachel works in the retail industry, where the mean salary for executives with less than 5 years' experience is $35,000 with a standard deviation of $8,000. rob is an engineer. the mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000.