THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING

question 191

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
In a shipment of 18 trucks to a local truck dealer,there are four trucks that don't have air conditioning.Assume that you select four trucks at random.
-What is the probability that two or fewer of the four don't have air conditioning?

• A)0.7727
• B)0.9814
• C)0.8169
• D)0.9242

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Definitions:

Reaction

A process in which substances interact to form one or more new substances with different properties.

β-lactams

A class of antibiotics that include penicillins, characterized by a four-membered lactam ring.

Penicillins

A group of antibiotics derived from Penicillium fungi, effective against a wide range of bacterial infections by inhibiting cell wall synthesis.

Cephalosporins

A class of β-lactam antibiotics derived from Acremonium, which are effective against a wide range of bacterial infections.