Don conducted a survey of two groupsof students that recently graduated from private and public colleges. He found that the mean debt for the students who attended private college was $26,600, while those who attended public colleges had a mean debt of $24,400. Don wants to see if the difference in mean debt is statistically significant.

What should Don state for the null hypothesis?

• Null Hypothesis: The difference in the true mean debt is $2,200.
• Alternative Hypothesis: There is no difference in the true mean debt between these two groups.
• Null Hypothesis: There is no difference in the true mean debt between these two groups.
• Alternative Hypothesis: There is at least some difference between the true mean debts for these two groups.
• Null Hypothesis: There is at least some difference between the true mean debts for these two groups.
• Alternative Hypothesis: There is a difference in the mean debt, with a standard deviation of $2,200.
• Null Hypothesis: There is a difference in the mean debt, with a standard deviation of $2,200.
• Alternative Hypothesis: There is at least some difference between the true mean debts for these two groups.