Capital One Statistician interview questions

They put me one the speaker while talking. Basic statistics questions about mean, SD, CI, multicollinearity(with some other information). normal distributed, SD=10, what you can get from this. CI 95% 5% 6%, explain. something about respond rate(forgot) If you impute the income by the mean, what will happen to the credit card company. Explain your answers. (Large amount of data or small amount, what will happen when lower income was replaced, how about higher income) Hope this will help and good luck.