Suppose that we are given data samples [whygy x=[a, 1, 2, 3, 4] 3":[3' 3} 5) 9' 11] Part 1: summary statistics What are the sample means, :E and y? 53 = number {'1 digits after decimal) 0 : number digits after decimal) 0 What are the sample variances and covariances, 33, a: and 5%,? SE, = number (1 digits afterdecimal] 0 3: = number (1 digits after decimal) 0 32y = number (1 digits after decimal) 0 Part 2: least squares regression Using the values from the previous part, compute the least squares parameters for the regression line ,A y=wg +1011: E || number (1 digits after decimal) 0 wt] = number (1 digits after decimal) 0 Using the linear model, what is the predicted value at a: = 1.5? .7; = number (1 digits after decimal) 0