Explore BrainMass

Explore BrainMass

    Normal Modelling of IQ Test Scores

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    I find this question really difficult to answer and I need help formulating a response.

    Some IQ tests are standardized to a normal model with a mean of 100 and a standard deviation of 16.

    a. Draw a model for these IQ scores, clearly label it , showing what the 65-95-99.7 rule predicts about the score.

    b. In what interval would you expect the central 95% of IQ scores be found

    c. About what percent of people should have IQ scores above 116?

    d. About what percent of people should have IQ scores between 68 and 84?

    e. About what percent of people should have IQ scores abouve 132?

    Thank you.

    © BrainMass Inc. brainmass.com June 4, 2020, 2:46 am ad1c9bdddf
    https://brainmass.com/statistics/normal-distribution/normal-modelling-iq-test-scores-478415

    Solution Preview

    Please find solution/explanations attached herewith. Thank you for asking BrainMass.

    Some IQ tests are standardized to a normal model with a mean of 100 and a standard deviation of 16.

    a. Draw a model for these IQ scores, clearly label it , showing what the 68-95-99.7 rule predicts about the score.

    68% of data lies within one standard deviation from ...

    Solution Summary

    The normal modeling of IQ test scores are examined. The interval which would you expect the central 95% of IQ scores is determined.

    $2.19

    ADVERTISEMENT