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According to the socioeconomic portrait of Quebec City, the average income per household is $65,234. Let's say that the standard deviation of income per household

According to the socioeconomic portrait of Quebec City, the average income per household is $65,234. Let's say that the standard deviation of income per household is $5,256. A random sample of 64 households is drawn from this economic sector.

What is the probability that the average income per household in Quebec City is less than $64,500?

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