An administrator finds in a local study that 41% of his university's students obtain an undergraduate degree in 4 years of study (based on 400...

An administrator finds in a local study that 41% of his university's students obtain an undergraduate degree in 4 years of study (based on 400 randomly selected students). Assuming that the national average for students graduating in 4 years is 39% and that the probability of observing this sample mean of 41% or higher was 0.075,