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Math

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Assume that the mean salary for a profession is $35,104 with a standard deviation of $3200. What percent of the profession earns less than $38,700?

I don't understand how to do this.
Please help!!

  • Math - ,

    I went to
    http://davidmlane.com/hyperstat/z_table.html
    and entered the values to get

    .8694

    This is a routine question. I don't know if you use tables in the back of your book or use a webpage like I linked to.
    If you are studying this topic, your statement of
    "I don't understand how to do this", puzzles me.

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