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Homework Help

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A set of 50 data values has a mean of 48 and a variance of 9.
I. Find the standard score (z) for a data value = 43.
II. Find the probability of a data value < 43.

  • Homework Help - ,

    Z = (score-mean)/SD

    SD = √variance

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.

  • Statistics - ,

    Indicate your subject in the "School Subject" box, so those with expertise in the area will respond to the question. You lucked out this time.

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