Determine the t critical value(s) that will capture the desired t-curve area in each of the following cases:
a. Central area = .95, df = 10
b. Central area = .95, df = 20
c. Central area =.99, df =20
d. Central area = .99, df = 50
e. Upper-tail area = .01, df = 25
f. Lower-tail area = .025, df = 5
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