4 We are using the Holt method to predict monthly VCR sales at Highland Appliance. At the end of October, 2005, Lt  200 and Tt  10. During November, 2005, 230 VCRs are sold. At the end of November, MAD  25, and we are 95% sure that VCR sales for December, 2005 will be between _____ and _____. Use a  b  0.5.