Question

if sigma fi=20 sigma fixi=2p+20 & mean= 12 find p​

Answer 1

Answer:

The value of p is 110

Step-by-step explanation:

Formula used:

Mean of frequency distribution:

$Mean=\frac{\Sigma{f_ix_i}}{\Sigma{f_i}}$

Given:

$\Sigma{f_i}=20$

$\Sigma{f_ix_i}=2p+20$

Also,

$Mean =12$

$\frac{\Sigma{f_ix_i}}{\Sigma{f_i}}=12$

$\frac{\Sigma{2p+20}}{20}=12$

$2p+20=12*20$

$2p+20=240$

$2p=240-20$

$2p=220$

$p=\frac{220}{2}$

$p=110$

Answer 2

Answer:

hellooosss guys , you answer has uploaded in the photo . hope it helps you in writing