Lesson 7.5 M2 Select & Draw Conclusions from Samples. A survey is a study of one or more characteristics of a group. The entire group you want information about is called a population . A sample is a part of the population. Types of Samples.
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The MOE gives a limit on how much the responses of a sample would differ from the responses of a population.
When a random sample of size n is taken from a large population, the MOE is approximately…
This means that if the percent of the sample responding a certain way is p (represented as a decimal) then the percent of the population that would respond the same way is likely to be between…
In a survey of 990 workers, 30% said they eat at home during a typical week.
What is the MOE?
Now give an interval that is likely to contain the exact percent of all workers who eat at home during a typical work week.
30% -3.2% = 26.8%
30% + 3.2% = 33.2%
It is likely that the exact percent of all workers who eat at home during a typical work week is between 26.8% and 33.2%.
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