A national survey found that 60% of all movie theater patrons purchase popcorn. Of those that purchase popcorn, 80% add salt and 65% add butter. Assuming the national survey is correct, find the expected value of movie theater patrons who will purchase popcorn out of a sample of 500.
Select one:
a. 300
b. 400
c. 325
d. Cannot be determined

a. 300

Explanation:

Assuming that 60% of theater patrons purchase popcorn, the value of theater patrons who will purchase a popcorn out a sample of 500 will be 60% of 500.

i.e  = (60/100) x 500

     = 300

300 patrons will purchase popcorn in a sample of 500 theater goers assuming that 60% theater patrons purchase popcorn.

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