Historical demand for a product is a. Using a weighted moving average with weights of 0.40 (June), 0.20 (May), and 0.40 (April), find the July forecast. (Round your answer to 1 decimal place.) b. Using a simple three-month moving average, find the July forecast. (Round your answer to 1 decimal place.) . Using single exponential smoothing with a=0.20 and a June forecast = 12, find the July forecast. (Round your answer to 1 decimal place.) 1. Using simple linear regression analysis, calculate the regression equation for the preceding demand data. (Do not round ntermediate calculations. Round your intercept value to 1 decimal place and slope value to 2 decimal places.) Using the regression equation in d, calculate the forecast for July. (Do not round intermediate calculations. Round your answer to decimal place.)