Border crossing must stop for us customs and immigation

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Reference no: EM132195032

1. Cars traveling from Canada to the United States through the Thousand Islands Border Crossing must stop for US Customs and Immigation. During the stop, each passenger in the car will present a passport for inspection by a US Customs Officer, answer questions, and declare certain valuables that may be in the car. On average, it takes a Customs Officer about five minutes to inspect passports and release a car for entry into the United States. Since the Thousand Islands Border Crossing is not heavily traveled at night, US Customs and Immigration only keeps one lane open at the checkpoint plaza and one officer on duty to process arriving cars. Between midnight and 6:00am, a car arrives at the Border Crossing plaza at an average rate of 9 an hour.

What is the average wait to speak to that officer?

What is the probability that someone will be able to speak to the officer immediately upon arrival?

A. 0.15 hours, 9 minutes, or 15% of one hour

B. 0.25 hours, 15 minutes, or 25% of one hour

C. 0.35 hours, 21 minutes, or 35% of one hour

D. 0.45 hours, 27 minutes, or 45% of one hour

2. Cars traveling from Canada to the United States through the Thousand Islands Border Crossing must stop for US Customs and Immigation. During the stop, each passenger in the car will present a passport for inspection by a US Customs Officer, answer questions, and declare certain valuables that may be in the car. On average, it takes a Customs Officer about five minutes to inspect passports and release a car for entry into the United States. Since the Thousand Islands Border Crossing is not heavily traveled at night, US Customs and Immigration only keeps one lane open at the checkpoint plaza and one officer on duty to process arriving cars. Between midnight and 6:00am, a car arrives at the Border Crossing plaza at an average rate of 9 an hour.

Assuming this scenario meets the assumptions of the M/M/1 model, how busy is the Customs Officer during that time period?

A. 95%, B. 65%, C. 85%, D. 75%

Reference no: EM132195032

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