# An investor is considering funding of a new video game.

#### soklang

##### New Member
An investor is considering funding of a new video game. She wants to know the worldwide percentage of people who play video games, so a survey is being planned.

(Hint: this problem is about the sample size for estimating the proportion)
Q1: Assume that about 16% of people play video games, how many people must be surveyed in order to be 90% confident that the estimated percentage is within 5 percentage points of the true population percentage?

Q2: How many people must be surveyed in order to be 90% confident that the estimated percentage is within 5 percentage points of the true population percentage, if nothing is known about the worldwide percentage of people who play video games?

#### AngleWyrm

##### Active Member
How many people must be surveyed in order to be 90% confident that the estimated percentage is within 5 percentage points of the true population percentage, if nothing is known about the worldwide percentage of people who play video games?
Confidence Level: 90%
Margin of Error: 5%
According to this sample size calculator, the ideal sample size is 271 for very large population, the first answer listed in post #4

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