A school administrator has students rate the quality of their education on a scale from 1 (poor)
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A school administrator has students rate the quality of their education on a scale from 1 (poor) to 7 (exceptional). She claims that 99.7% of students rated the quality of their education between 3.5 and 6.5. If the mean rating is 5.0, then what is the standard deviation, assuming the data are normally distributed?
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Related Book For
Statistics For The Behavioral Sciences
ISBN: 9781506386256
3rd Edition
Authors: Gregory J. Privitera
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