Suppose a normally distributed set of data has a mean of 170 and a standard deviation of 16. Use the 68-95-99.7 rule (sometimes called the Empirical rule or the Standard Deviation rule) to determine the percentage of scores in the data set expected to be between the scores 122 and 186.  Answer =  (Write your answer in decimal form

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Suppose a normally distributed set of data has a mean of 170 and a standard deviation of 16. Use the 68-95-99.7 rule (sometimes called the Empirical rule or the Standard Deviation rule) to determine the percentage of scores in the data set expected to be between the scores 122 and 186. 

Answer =  (Write your answer in decimal form, not percentage form. For example, if your percentage is 99%, enter 0.99, not 99. Keep all decimal places.)

Caution: Using tables or Excel for this may produce a wrong answer. Use the 68-95-99.7 rule.

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