emj70

04.11.2019 • 

Mathematics

An internet company conducts a global consumer survey to multinational companies understand different consumer attitudes throughout the world. within 30 countries, the researchers interview 1000 people aged 13-65. their sample are designed so that they get 500 makes and 500 females in each country.
a.) are they using simple random sample?
b.) what kind of design do you think they are using?

Ответ:

haloom9698

27.08.2020

Mathematics

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Disance=√(x2-x1)²+(y2-y1)²
             =√(-4-5)²+(-1-2)²
              =√(-9)²+(-3)²
              =√81+9
               =√90
                =9.5

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