Suppose the gestation period for a certain species of elephant is normally distributed with a mean of 608 days and a standard deviation of 26 days. Find the two gestation periods that have the middle 50% of all gestation periods for this species between them. (You will find two values: a lower endpoint and an upper endpoint for the range of values containing the middle 50% of all gestation periods.) Round your final answers to one decimal place.

Lower endpoint: Blank 1

Upper endpoint: Blank 2