Question: 82

For a t-curve with df=8, find each t-value and illustrate your results graphically.

a. The t-value having area 0.05 to its right.

b.

c. The t-value having area 0.01 to its left (Hint: A t-curve is symmetric about 0.)

d. The two t-values that divide the area under the curve into a middle 0.90 area and two outside 0f 0.05.