In a recent year, Delaware had the highest per capita annual income with  $51,803 . If  =σ$4850 , answer the following questions. Assume that the sample is taken from a large population and the correction factor can be ignored. Round intermediate  z What is the probability that a random sample of  39  state residents had a mean income less than  $48,800 ? -value calculations to two decimal places and the final answers to at least four decimal places.

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