Use the Normal Distribution to Approximate the Desired Probability

question 114

Multiple Choice

Use the normal distribution to approximate the desired probability.
-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) 0.0316, no
• B) 0.0409, no
• C) 0.0409, yes
• D) 0.0316, yes

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Definitions:

Brand Improvisation

The ability of a brand to adapt spontaneously to changing market conditions or customer needs without losing its core identity.

Brand Improvisation

The act of spontaneously creating or adapting a brand's messaging or strategy in response to unexpected opportunities or challenges.

Authenticity Deficit

Refers to a perceived lack of genuineness or originality within a brand, product, or individual, leading to distrust or disfavor.

Authenticity Deficit

The gap between a brand's claims of genuineness and the consumer's perception of its actual authenticity.