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400 people are asked if they drink tea. [tex]\frac{7}{10}[/tex] say Yes and 20% of the people who say Yes drink at least 3 cups each day.

I really need help on a) Complete the frequency tree, I don't know how to work that one out.

$400 people are asked if they drink tea texfrac710tex say Yes and 20 of the people who say Yes drink at least 3 cups each day I really need help on a Complete th class=$

Respuesta :

400 people are asked if they drink tea. [tex]\frac{7}{10}[/tex] say Yes and 20% of the people who say Yes drink at least 3 cups each day. I really need help on a) Complete the frequency tree, I don't know how to work that one out.

Respuesta :

400 people are asked if they drink tea. [tex]\frac{7}{10}[/tex] say Yes and 20% of the people who say Yes drink at least 3 cups each day.

I really need help on a) Complete the frequency tree, I don't know how to work that one out.