The credit card department of a certain bank knows from experience that 5% of the cardholders have some high school, 15% have completed high school, 55% have had some university and 25% have completed...

The credit card department of a certain bank knows from experience that 5% of the cardholders have some high school, 15% have completed high school, 55% have had some university and 25% have completed university. Of the 500 cardholders whose cards have been called in for failure to pay their charges this month, 50 had some high school, 100 had completed high school, 160 had some university, and 190 had completed university.
Can we conclude at a 1% level of significance that the distribution cardholders who do not pay their charges is different from all others