Question

Can someone tell me how this is wrong​

Answer 1

y = 17

Explanation:

We have five values : 2 , 5 , 7 , y , 9

and the mean = 8

this means :

`(2+5+7+y+9)/(5) =8\\\\then\\\\23+y = 8*5\\\\then\\\\y = 40 - 23\\\\then\\\\y=17`

Verification: (2+5+7+17+9)÷5 = 8