IQ scores have an average of 100 with a standard deviation of 15. Use the empirical rule to...
Question:
IQ scores have an average of 100 with a standard deviation of 15. Use the empirical rule to determine what percentage of IQ scores fall between 70 and 115. Round decimals to three places.
Empirical Rule for IQ:
Given the mean and standard deviation of a normal distribution, the empirical rule is used to find probabilities concerning integer values of the standard deviation.
To achieve this goal, a distribution of areas under the normal curve is constructed to represent the standard deviations and their probabilities for particular cases of normal distributions such as IQ
Answer and Explanation: 1
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View this answerWe want to identify the standard deviation concerning 70 and 115 and their probabilities.
The following figure represents the empirical rule for IQ.
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Normal Distribution's Empirical Rule | Overview & Percentages
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Learn about the normal distribution's empirical rule. Find the corresponding normal distribution percentages according to the empirical rule and its chart.
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