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The average yearly Medical Hospital Insurance benefit per person was $4064 in a recent year with...

The average yearly Medical Hospital Insurance benefit per person was $4064 in a recent year with standard deviation of $460. The benefits are normally distributed. If a random sample of 25 patients are selected, what is the probability that the sample mean less is than $3970. (Give the probability to four decimal places )

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orchestra answered 2 years ago
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