The following table gives in-state tuition costs (in dollars) for 15 randomly selected colleges taken from a list of the 100 best values in public colleges (source: Kiplinger's Magazine, October 2000).
3788 4065 2196 7360 5212 4137 4060 3956 3975 7395
4058 3683 3999 3156 4354
(a) Test for outliers.
(b) Test whether the data are normal.