A probability density function a. gives the probability that the ...

[jon_i]

A probability density function
 a. gives the probability that the random variable equals a specific value of x.
  b. is used for discrete random variables.
  c. describes the graph whose underlying area represents probability over an interval.
  d. each of these choices are true.

Question 2

In regression analysis if the dependent variable is measured in dollars, the independent variable
 a. must also be in dollars
  b. must be in some units of currency
  c. can be any units
  d. cannot be in dollars

[jaygar71]

Answer to Question 1

c

Answer to Question 2

C