Draw a picture of each of the following distributions. Shade the area above the value given, and label the proportion of the distribution that falls in that region, as in given Figure. You do not have to label the vertical axis. Note: For parts (b) and (c), the use of either statistical software or Excel is necessary.
a. Standard normal distribution; z = 0.70.
b. t-distribution with df = 10, t = 0.70.
c. t-distribution with df = 10, t = -0.70.
