Gianna is paid $90 for 5 hours of work.

Mathematics

1 answer:

pav-90 [236]3 years ago

5 0

A for 8 hours of work its 144$
B a little more than 3 hours for 60$
Hope this helps

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$A\cap B$ - selected student is freshman is girl

$A|B$ - choosen girl is freshmen.

Use formula $Pr(A|B)=\dfrac{Pr(A\cap B)}{Pr(B)}$ .

From the table you can see that girls that are freshmen are 4 from all 30 people, then $Pr(A\cap B)=\dfrac{4}{30}$ . There are 18 girls, then $Pr(B)=\dfrac{18}{30}$ . Substitute into the formula:

$Pr(A|B)=\dfrac{\frac{4}{30} }{\frac{18}{30} }=\dfrac{4}{18} =\dfrac{2}{9}$ .

Answer: $Pr(A|B)=\dfrac{2}{9}$ .

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11x26 <br> 49x12<br> 12x25<br><br> Thanks for helping me!

Savatey [412]

286
588
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:) your welcome

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