Tilda took a random sample of n = 17 redwood trees in a park she oversees and had their heights
measured. The heights were roughly symmetric with a mean of = 60 meters and a standard deviation of
Sy = 6.1 meters. She wants to use this data to construct a t interval for the mean height of all the
redwood trees in her park with 95% confidence.
Con
What critical value t' should Tilda use?