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7. According to the socio-economic portrait of Quebec City, the average income per household is $65234. Let's assume that the standard deviation of household income

7. According to the socio-economic portrait of Quebec City, the average income per household is $65234. Let's assume that the standard deviation of household income is $5256. We take a random sample of 64 households from this economic sector. economic sector. What is the probability that the average household income in Quebec City is less than $64,500?

0.3680 0.8680 0.0555 0.4445 0.1320

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