Let the Time Between Two Consecutive Arrivals at a Grocery

question 23

Multiple Choice

Let the time between two consecutive arrivals at a grocery store checkout line be exponentially distributed with a mean of three minutes. Find the probability that the next arrival does not occur until at least four minutes have passed since the last arrival.

• A) 0.0000
• B) 0.2636
• C) 0.4724
• D) 0.7364

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Definitions:

Cystic Fibrosis

A genetic disorder affecting the exocrine glands, leading to thick mucus buildup in the lungs and digestive tract.

Alveolar Air

The air present within the alveoli, the tiny air sacs in the lungs where gas exchange occurs.

Venous Blood

Blood that is returning to the heart through the veins, characterized by a lower oxygen content and a darker color compared to arterial blood.

Arterial Blood

Oxygen-rich blood that is pumped from the heart to the rest of the body through arteries.