### In a video game, each player starts the game with…

00:57
Johns Hopkins University
Problem 7

The members of a city council wanted to assess the
opinions of all city residents about converting an
open field into a dog park. The council surveyed a
sample of 500 city residents who own dogs. The
survey showed that the majority of those sampled
were in favor of the dog park. Which of the
following is true about the city council's survey?
A) It shows that the majority of city residents are in
favor of the dog park.
B) The survey sample should have included more
residents who are dog owners.
C) The survey sample should have consisted
D) The survey sample is biased because it is not
representative of all city residents.

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SAT
SAT Practice Test # 6

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## Video Transcript

Okay, So this one says that the members of the City Council wanted to assess the opinions of all city residents about converting and open fields into a dog park. And then they start sampled five hundred city residents who own dogs. Well, first of all, here's our first air is that they want to know the opinions of all people, but they only sampled five hundred city residents. So then, if they're sampling sampling five hundred city residents, that means that they didn't ask all people. We don't know how many there are, but there could even have been five hundred one total people in the city. But they only sampled five hundred example. Always soothing means that it's gonna be a smaller number, then your entire population. So then it says, which is the following is true about the city survey. So let's go through it one by one. So a says it shows the majority of the city residents are in favor of the park. Well, again, we don't know what is a majority, because we're not given the total amount. If the total amount was like five hundred and fifty and five hundred, where is simple and they were in favor. Maybe that would have been the majority, But again, we don't know that if it's five hundred out of like five thousand, then that wouldn't be the majority, I say. So be says, the surveys sample should have included more residents who are dog owners. Well, this one isn't about whether their dog owners or not, because they wanted to assess the opinions off all city residents. So we can't say B. Percy. The survey sample should have consisted entirely of presents who do not own doubts well for people that don't own dogs well again. We can't say that because that's like the same recent SB except the opposite. We want to search, survey all people, not just people who own doubts are not just people who don't own us. So then for D, it says the survey example is biased because it is not representative of all city residents. Well, we know that one is true because we have initially said well, they wanted a sample. They wanted to know that opinions of all city residents, but then the out of out of the city only port five hundred city residents. That one is true