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The following ANOVA table shows parts of the software output generated in developing a multiple regression model. df SS MS F Regression 5 149.38 29.876 3.66 Residual 34 277.42 8.159 a) How many independent variables are in the model? k = b) What is the sample size? n = c) What is the coefficient of determination? (1 decimal place) R2A small company gathered sales data over the last 7 months as follows: Month Sales January 285 February 270 March 264 April 252 May 207 June 279 July 198 August Download CSV Do not round answers. a) What is the 3-month moving average forecast for June? b) What is the 2-month weighted moving average forecast for June using weights 3 and 2? Assign higher weight to the most recent period. c) Given that the exponentially smoothed forecast for February is 285, what is the simple exponential smoothing forecast for April with a = 0.8