(1)今客戶要求的規格為 199± 4 公克，過重或過輕均為不合格，試問在目前的機器設備下，不合格的比例為__________；

2. Assuming a competitive market in the U.S., together with a supply function: $ q{s} = 400p - 400 $ and a demand function: $ q{d} = 2400 - 400p $. When the equilibrium price and quantity are reached, what are equilibrium price and quantity? (10%). Now due to Trump's reciprocal tariff policy, the authorities impose a $4 per-unit tax to be collected from sellers. We denote $ P{c} $ as the price paid by consumers after imposed tax and $ P{s} $ as the price received by producers after tax. Please solve the after-tax equilibrium quantity ($ q^{} $) and equilibrium prices for both consumers $ P{c}^{} $ and sellers $ P{s}^{*} $. (15%)

題組內容

(1)今客戶要求的規格為 \( 199\pm 4 \) 公克，過重或過輕均為不合格，試問在目前的機器設備下，不合格的比例為__________；

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