The ratio of male to female students in a junior high

Mathematics

1 answer:

nalin [4]3 years ago

8 0

the total no of population=1650

13:17 first add the two numbers 13+17=30

then 13/30×y =715 , i make 13 at the numerator because it's males ratio

after that 30/13×13/30y =715 ×30/13

y =715×30/13

y =1650

after u find the total no it's simple to find the no of females

17/30×1650=935

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Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

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