Merta Reports That 74% of Its Trains Are on Time

question 136

Multiple Choice

Merta reports that 74% of its trains are on time. A check of 60 randomly selected trains shows that 38 of them arrived on time. Find the probability that among the 60 trains, 38 or fewer arrive on time. Based on the result, does it seem plausible that the "on-time" rate of 74% could be correct?

• A).0409 , yes
• B).0316 , yes
• C).0316 , no
• D).0409 , no

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Definitions:

Digital Bits

The smallest unit of data in computing and digital communications, representing a binary value of 0 or 1.

Digitizer

A device or component that converts analog signals into digital form, often used in screens to detect touch inputs.

MIDI

Musical Instrument Digital Interface, a protocol designed for recording and playing back music on digital synthesizers.

Synthesized Music

Music created or modified by electronic devices or software through the manipulation of sound waves, enabling the production of new sounds and textures.