How does sleep deprivation affect your ability to drive? A recent studey measured the effects of 19 professional drivers. Each driver participated in two
experimental sessions: one after normal sleep and one after 27 hours of total
sleep deprivation. The treatments were assigned in random order. In each
session, performance was measured on a variety of tasks including a driving
simulation.
a. What is the explanatory variable?
b. What is the response variable?
c. What is the experimental unit?
d. What is the control group?
e. Is there a lurking variable? If so, what is it?

In 2000, for a certain region, 27.1% of incoming college freshman characterized their political views as liberal, 23.1% as moderate, and 49.8% as conservative. for this year, a random sample of 400 incoming college freshman yielded the frequency distribution for political views shown below. a. determine the mode of the data. b. decide whether it would be appropriate to use either the mean or the median as a measure of center. explain your answer. political view frequency liberal 118 moderate 98 conservative 184 a. choose the correct answer below. select all that apply. a. the mode is moderate. b. the mode is liberal. c. the mode is conservative. d. there is no mode.