the national freshman-to sophomore retention rate has held steady at 74%. A certain college has 490 of the 601 freshman return as sophomores. Does this college have a right to brag that it has an unusually high retention rate?

Choose from the following

Yes, because their retention rate is not more than 3 standard deviations above the expected rate of 74%

No, because their retention rate is over 4 standard deviations above the expected rate of 74%

No because their retention rate is not more than 3 standard deviations above the expected rate of 74%

Yes because their retention rate is over 4 standard deviations above the expected rate of 74%