Question: 3. (15 points) Consider the following simple regression model with no inter- cept: yi = Bxit ci;i = 1, ..., 30, where _ilx? = 29

3. (15 points) Consider the following simple regression model with no inter- cept: yi = Bxit ci;i = 1, ..., 30, where _ilx? = 29 and Zij xiyi = 20. (a) Determine the least square estimate of B. (b) With A = 20, determine the ridge estimate of B. (c) With A = 20, determine the lasso estimate of B

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