Answer:
Step-by-step explanation:

<span>A. People who were promised free samples of Penelope's Puffy Popcorn for completing the survey</span>
To Find The Answer, We Need To Add All Of Them Together, Then Divide By the Number Of Values. So:
64+23+78+82+91
-----------------------
5
<span>64+23+78+82+91 = 338.
</span>
338
-----
5
338/5 = 67.6
So, The Average Is 67.6