Find the sum of the angles in a polygon with 6 sides. __________ 
Definitions:
Sample Mean
The average value of a sample, calculated by summing all observations and dividing by the number of observations in the sample.
Concert Tickets
Tickets issued for admission to a concert, serving as proof of payment and the right to entry.
Significance Level
A threshold used in hypothesis testing that determines the probability of rejecting the null hypothesis when it is actually true.
Sample Mean
The average value of a sample set of numbers, calculated by adding all observations and dividing by the number of observations.
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