Question

Please solve the 28th question.

Answer 1

Answer:

Step-by-step explanation:

Total frequency=100

So,45+x+y=100

x+y=55. ---1

Now frequency is 28.5

Therefore CI will be

20-30

As,median =(n/2-cf./f)h +l

28.5=(50-5-x/20)10+20

8.5=45-x/2

17=45-x

Therefore,x=28

Putting it in equarion 1 ,we get

x+y=55

28+y=55

Y=27

Thats all

Hope it will help u ..

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