The average monthly grocery bill for an individual is normally distributed with a mean of $85 and a standard deivation of $20.   If you select 4 individuals, what is the probability that their mean grocery bill is between $50 and $65?

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Q: What is a probability distribution?

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Q: What is the probability that the sample proportion exceeds 0.12?

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Q: of events. Ratio:  ____ : ____

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.