There Are 10 Rolls of Film in a Box and 3

question 72

Multiple Choice

There are 10 rolls of film in a box and 3 are defective. Two rolls are to be selected one after the other. What is the probability of selecting a defective roll followed by another defective roll?

• A) 1/2 or 0.50
• B) 1/4 or 0.25
• C) 1/120, or about 0.0083
• D) 1/15, or about 0.07
• E) None of the choices are correct

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Definitions:

Meat Powder

A powdered form of meat used in various scientific experiments or as a dietary supplement, providing a concentrated source of protein and nutrients.

Pavlov

A Russian physiologist best known for his work in classical conditioning, demonstrating the learned connection between stimuli and responses.

Conditioned Stimulus

An initially neutral signal that, upon being paired with an unconditioned stimulus, ultimately elicits a conditioned response.

Unconditioned Response

An automatic, natural reaction to a stimulus that occurs without any prior learning or conditioning.