Answer:
I believe the answer is soap.
 
        
                    
             
        
        
        
Answer:
a study with a significantly smaller than expected standard deviation about the sample mean
a study on cooking times at high altitudes, with 90% of the data falling above the population mean
 a study on crosswalk wait times with 95% of the data falling within 1 standard deviation of the population mean
Explanation:
took the test
 
        
             
        
        
        
Once upon a midnight dreary, while I pondered, weak and weary,
Over many a quaint and curious volume of forgotten lore—
While I nodded, nearly napping, suddenly there came a tapping,
As of some one gently rapping, rapping at my chamber door.
"'Tis some visiter," I muttered, "tapping at my chamber door—
<span>            Only this and nothing more."</span>