Trinity General Hospital had the following number of patient admissions during the past 8 weeks:

1. Develop a 3-week weighted average forecast for week 4 through 9 with weights of W₁ = 0.5, W₂ = 0.3, and W₃ = 0.2.

2. Forecast patient admissions for week 9 using simple exponential smoothing with α = 0.2. Assume that the forecast for week 4 (F₄) is the naïve forecast.

3. Use the MSE to determine which of the two forecasting methods is more accurate.

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Week Patient Admissions 120 145 112 130 110 100 140 95