Johngabicaid
Answered

Statistics.
The mean of 12 scores is 68. If two scores , 70 and 63 are removed, what is the mean of the remaining scores?

Pls. help me thanks

Sagot :

Daedalusid
x=(n1-n10)
(x+70+63)/12 = 68
x+70+63=816
x=683

new mean is x/10 so 68.3