[Solved] Given below are four observations collected in a regression study on two variables x (independent variable) and y (dependent variable). a.Develop the least squares estimated regression equation. b.At 95% confidence, perform a t test and determine whether or not the slope is significantly different from zero. c.Perform an F test to determine whether or not the model is significant. Let \(\alpha\) = 0.05. d.Compute the coefficient of determination. Cross-sectional Design: null Formal Operational Stage: null Abstractly: null Conservation Task: null