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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
29 Oct 2021

Given information

Given that the amount of time spent alone by a four-year-old child is normally distributed with mean 3 hours and standard deviation 1.5 hours.

Step-by-step explanation

Step 1.

The random variable can be defined as,

Number of hours that a Chinese four-year-old in a rural area is unsupervised during the day.

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