According to the socio-economic portrait of Quebec City, the average income per household is $65,234. Let's assume that the standard deviation of household income is $5,256. We take a random sample of 64 households from this economic sector. What is the probability that the average household income in Quebec City is less than $65,968?

0,4445 0,6555 0,8680 0,1320 0,3680