Suppose that variables x and y satisfy the assumptions for regression inferences.

Suppose that variables x and y satisfy the assumptions for regression inferences. For samples of size n, each with the same values for the predictor variable, what is the distribution of the slope b1, of the sample regression line?

Select one:

a. t-distribution with mean β1 and standard deviation σ/sqrtsxxb. t-distribution with mean β1 and standard deviation sec. Normal with mean β1 and standard deviation sed. Normal with mean β1 and standard deviation σ/sqrtsxx