a	$52,500	$10,880
b	$52,500	$11,719
c	$51,500	$9,642
d	$51,500	$9,146

The mean cost of getting a four-year college degree in a certain region of the country is $52,900 with a standard deviation of $8,500. Assume costs are normally distributed.

In another region 10% of the x values from samples of size n = 25 are under $49,500 and 10% are over $55,500.From this sampling distribution information we can conclude that the population mean cost of a four-year college degree is = _______ and the population standard deviation is = ______.