math

Suppose babies born in a large hospital have a mean weight of 3181 grams, and a standard deviation of 526. If 97 babies are sampled at random from the hospital, what is the probability that the mean weight of the sample babies would differ from the population mean by greater than 53 grams? (Round your answer to 4 decimal places)

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asked by kyle
  1. So we are looking for the between
    3181+53 and 3181-53
    or between 3234 and 3128 .

    best webpage for this stuff:
    http://davidmlane.com/hyperstat/z_table.html

    enter 3181 for mean
    enter 526 for sd
    click on between: enter 3128 and 3234 to get
    .0803

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    posted by Reiny

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