Question

I need the answer for Q.8. Someone pls help.

Answer 1

Answer:

Step-by-step explanation:

Sigma f=22+p

Sigma fx=30+40+75+20p+175

=20p+320

Mean= fx/f

15=(20p+320)/22+p

15(22+p)=20p+320

320+15p=20p+320

20p-15p=320-320

5p=0

p=0