Fill in the blanks. a. The line y = 0 + 1x is called the______. b. The common conditional standard deviation of the response variable

Fill in the blanks.
a. The line y = β0 + β1x is called the______.
b. The common conditional standard deviation of the response variable is denoted ______.
c. For x = 6, the conditional distribution of the response variable is a distribution having mean and standard deviation______.
Assume that the variables under consideration satisfy the assumptions for regression inferences.