Excel Online Activity: Exponential Smoothing A retail store records customer demand during each sales period. The data has been collected in the Microsoft Excel Online file below. Use the Microsoft Excel Online file below to develop the single exponential smoothing forecast and answer the following questions. Questions 1. What is the forecast for the 13 th period based on the single exponential smoothing? Round your answer to two decimal places 2. What is the MSE for the single exponential smoothing forecast? Round your answer to two decimal places. Exponential Smoothing Forecasting Smoothing constant 0.3