If we know that the length of time it takes a university student to find a parking space in the university car park follows a normal distribution with a mean of 4.5 minutes and a standard deviation of 1.5 minutes, then the point in the distribution in which 86% of the university students exceed when trying to find a parking space in the car park is____ minutes (please provide your answer to 2 decimal places). Also how would we do this in excel?