QUESTION 4 Data set huron gives the water level of Lake Huron in feet from 16?519?2_ Use the dataset from 13751970 only and do the following: 3 Fit a linear regression and compare this to a piecewise lineartrend model with knots at 1900 and 1915, Perform appropriate test(s) to select the best model between the two b. Generate forecasts from seleded model for the period upto 1930. Provide your R code, appropriate results, and explanation in the following textbox