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2 answers:
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Answer:
probability = 0.008
probability = 0.0256
Explanation:
we know here probability of defective is 0.2
so probability of not defective is 1 - 0.2 = 0.8
as we know 3 item is arrive off process line in succession
so The probability that an item is defective is
as P(defective) = 0.20
as all item are independent so
probability that all three items are defective is
probability = 0.20 × 0.20 × 0.20 = 0.008
and
probability that exactly 3 of next 4 are defective
so number of way that can choose 3 out of 4 is
=
= 4
so as all are independent probability is
probability = ( the number of way to choose 3 out of 4 ) × ( 3 item defective ) × ( 1 item not defective )
probability = × 0.2³ × ( 1- 0.2)
probability = 4 × 0.008 × 0.8
probability = 0.0256
Answer:
The dead-weight loss from the tax is $2,250
Explanation:
Free market equilibrium price is P1
Total social economic benefit is the sum of:
- consumer surplus (area below demand curve and above price line P1) and
- producer surplus (area above supply curve and below P1)
When tax is imposed, quantity is reduced, price increased to P2 for consumer, P0 for supplier.
The part of the loss from consumer and producer surplus is compensated with the revenue from tax.
The other part (red triangle) is the dead-weight loss. Its amount is given by the area of the triangle with:
- base length being the tax amount ($15/unit) and
- height being the reduced quantity (300 units)
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