The 1-Mile Run is a common test for assessing physical fitness. Among college males the 1-Mile Run time is nor?

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The 1-Mile Run is a common test for assessing physical fitness. Among college males the 1-Mile Run time is normally distributed with a mean of 411 seconds and standard deviation of 63 seconds.



What is the third quartile of this population?The 1-Mile Run is a common test for assessing physical fitness. Among college males the 1-Mile Run time is nor?ANSWER: Third Quartile starts at 453 seconds

Why??

=411+0.674*63



The Table for Standard Normal Distribution is organized as a cummulative 'area' from the LEFT corresponding to the STANDARDIZED VARIABLE z. The Standard Normal Distribution is also symmetric (called a 'Bell Curve') which means its an interpretive procedure to Look-Up the 'area' from the Table.



For STANDARDIZED VARIABLE z = 0.674 the corresponding LEFT 'area' = 0.75. (Third Quartile)