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5 votes
Instructor Vallejo is trying to figure out the percentage of students that still listen to The Doors. Instructor Vallejo

is pretty out of touch, so he doesn't have a prior percentage of students who listen to The Doors that he can use.
How many students should instructor Vallejo sample if he wants to be within 11% of the actual percentage of
students who listen to The Doors with a 82% confidence level.

User Birdman
by
4.9k points

1 Answer

4 votes

Answer:

N=115

Explanation:

n=.25(2.5715/.12)^2 =114.8 so round up to 115. Hope that help you

User Vaclav
by
5.6k points
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