7. Which of the following statements is are correct regarding the concept of an "independent variable?" a. its value depends on values of other variables b. its value does not depend on values of other variables c. it is always equal to zero d. none of these e. all of these 8. Which of the following statements is are correct regarding the concept of "LaPlace?" a. it assumes that probabilities of occurrences are equal b. it assumes that probabilities of occurrences are not equal c. it assumes that the probabilities of occurrence are qual to zero d. none of these e. all of these