If a certain sample of data has a mean of 24.0 and a standard deviation of 3.0, which of the following values is more than 2.5 standard deviations from the mean?
Choose the correct answer:	A) 12.0	B) 13.5	C) 17.0	D) 23.5	E) 26.5
Value ismore than 2.5SDfrom the mean means that the distance between the mean and the value must be more than 2.5*SD=7.5. So the value must be either less than 24-7.5= 
<gadget id="calculator">24-7.5</gadget>
<output>16.5</output>
16.5or more than 24+7.5=31.5.   Answer: 17.0.
<result>C</result>
If a certain sample of data has a mean of 24.0 and a standard deviation of 3.0, which of the following values is more than 2.5 standard deviations from the mean?