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anonymous

  • 5 years ago

One measure of intelligence is the Stanford-Binet Intelligence Quotient (IQ). A study of a certain population finds that IQ scores have a bell-shaped distribution with a mean of 110 and a standard deviation of 5. What percentage of persons has an IQ score between 105 and 115? Round the percentage to the nearest integer.

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  1. anonymous
    • 5 years ago
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    In other words, what percent of scores lie within one standard deviation of the mean? 68%

  2. anonymous
    • 5 years ago
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    Empirical rule. They tell you its bell shaped

  3. anonymous
    • 5 years ago
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    mr banjo you were correct..thanks for the help

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